JP2013164912A - Led lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting device capable of improving a heat radiation efficiency to a structure such as a tunnel with a simple structure and having a flexible mounting structure.SOLUTION: In an LED lighting device 1, a heat radiator 4 forming one side face of a lighting device body 5 where LED light-emitting devices 2 for lighting and LED drive circuits 3 are built in is formed of an aluminum metal extrusion molding member having good thermal conductivity. The heat radiator 4 has heat radiation fins 4a for radiating heat generated from the LED light-emitting devices 2. A fixing stand 6 for mounting the lighting device body 5 on a tunnel sidewall 8 and a universal shaft joint 7 capable of arbitrarily changing a lighting direction are formed of an aluminum metal extrusion molding member. Thus, the LED lighting device 1 becomes a structure having good productivity and improving heat radiation efficiency and being flexible in setting lighting directions.

Description

  The present invention relates to an LED lighting device that uses an LED (Light Emitting Diode) as a light emitting device. More specifically, the present invention relates to an LED lighting device that facilitates heat dissipation from an LED and facilitates attachment to a structure.

  In recent years, with the expansion of the use of LED light-emitting devices, this LED has been increasingly applied to various fields. In particular, in order to widen the illumination range, a package-type LED illumination device configured with a plurality of LEDs as light sources is used to illuminate a wide space. For example, facilities for plant cultivation, tunnels, stadiums, theaters, etc. Further, the LED lighting device when applied to a tunnel is attached to a wall surface of the tunnel and used for lighting a vehicle or the like.

  In general, the purpose of an LED lighting device used in a room such as a building can be achieved by simply pursuing brightness. However, in the case of a tunnel, since the vehicle suddenly travels from the outside to a dark place, the object is to ensure safe traveling of the vehicle or the like entering the tunnel. Recently, LED lighting devices have been used, but lighting in tunnels is defined by road lighting facility installation standards. It is known that this illuminating device is used in a symmetric illumination method, a counter beam illumination method, a pro-beam illumination method, or the like depending on the purpose of illumination.

  For vehicles traveling in tunnels, accurate visual information such as road conditions and traffic conditions is required. For this reason, the function of an illuminating device occupies a big weight. As described above, the lighting device illuminates the road surface to make it easy to visually recognize obstacles such as falling objects, but at the same time, the vehicle is directly illuminated to ensure safe driving. That is, the lighting device is to maintain a safe visual environment in the tunnel. In addition, since LED lighting devices generate a lot of heat, measures to dissipate heat are also taken, and in addition to ease of use in consideration of long-term installation, ease of maintenance is also necessary. is there.

  In the conventional example, for example, as an example applied to a tunnel, although not specified as an LED, there is a lighting device for a tunnel that is mounted with a lighting device of a discharge lamp for the purpose of pro-beam illumination and reflects light by a reflector. Known (see, for example, Patent Documents 1 and 2). Moreover, although it is an explosion-proof illuminating device, the illuminating device supported by the ceiling of the tunnel by the structure which attached the several LED light source, for example is known (for example, refer patent document 3).

  According to this example, the support to the tunnel ceiling simply suspends the lighting device as it is through the suspending tool. The heat radiation is performed by the heat radiation fins of the support of the LED light source. Also, although not specified for tunnels, LED lighting devices that take heat dissipation into consideration are those that use ceramics as the contact part that closely attaches the back surface of the light source unit to the mounting surface of the die-cast instrument housing. (For example, see Patent Document 4).

  Further, there is also known an illumination device in which a large number of LED light emitting units are provided on one side of a cooling panel, the cooling panel is made of an aluminum hollow extruded shape, and the cooling fluid is cooled through the hollow portion of the cooling panel (for example, Patent Documents). 5). Furthermore, LED lighting devices that take heat dissipation into account are also known that have a long heat dissipation block that is placed on the other side of the LED unit in the thickness direction and is held by a reflector and dissipates heat generated by the LED unit. (For example, see Patent Document 6). Furthermore, the thing of the structure by which the heat sink fin was provided in the flat tube to which LED was attached is also known (for example, refer patent document 7).

JP 2007-328963 A Japanese Patent No. 4127459 JP 2007-227305 A JP 2011-96416 A JP 2011-54529 A JP 2011-150816 A JP 2010-267435 A

  As described above, various types of LED lighting devices are known, and there are many types of countermeasures for heat dissipation around the LED light emitting unit. In this way, when the LED lighting device is viewed as an instrument, heat dissipation measures are taken accordingly. However, the LED illumination device composed of a plurality of light emitters also generates a large amount of heat, and the conventional method has a limit in heat dissipation. In order to perform heat radiation more efficiently, if the conventional method is followed as it is, the cost becomes high because a dedicated device for heat radiation is required. Moreover, when attaching to a structure, the fixture for attaching this LED lighting apparatus is also needed.

  In particular, an LED lighting device applied to a structure such as a tunnel must withstand long-term use. In addition, it must be configured to be as easy to maintain as possible. In the case of a tunnel, the illumination conditions vary depending on the vehicle to be traveled, the illumination target such as the road surface, and the like, and therefore depend on the conditions of the vehicle itself, the attachment site, and the tunnel structure. For this reason, since the attachment form of an illuminating device changes for every tunnel, the thing of a flexible form is calculated | required. Along with this, the efficiency of heat radiation of the lighting device including the fixture is also required.

  The present invention has been made to solve the above-described problems, and achieves the following object. An object of the present invention is to provide an LED lighting device that has a simple structure, increases heat dissipation efficiency, and has a flexible mounting structure.

The present invention takes the following means in order to achieve the object.
The LED lighting device according to the first aspect of the present invention includes an LED light emitting device that emits illumination light, an LED drive circuit for driving the LED light emitting device, and a metal body having good thermal conductivity, the LED light emitting device and the LED A lighting device body including a drive circuit and a heat dissipating body integrally formed with heat dissipating fins for dissipating heat generated from the LED light emitting device; and a metal body having good thermal conductivity, the lighting device body A fixed base for fixing the heat sink to the structure, heat from the heat radiating body is transferred to the fixed base, the heat radiating body and the fixed base are connected to each other, and any two axes are orthogonally centered. It consists of a metal universal shaft joint that can swing at an angular position and can be fixed to the radiator and the fixing base.

The LED lighting device according to a second aspect of the present invention is the first aspect of the present invention, wherein the universal joint is a universal joint structure in which a first axis and a second axis orthogonal to the first axis intersect. Clamping means for fitting the lighting device main body to the fixed base at an arbitrary swinging angle position is provided to be fitted to each of the shaft and the second shaft.
The LED lighting device according to a third aspect of the present invention is the LED illuminating device according to the second aspect, wherein the clamping means passes through a joint portion provided in the universal shaft joint and a first bearing portion provided in the heat radiating body, and fixes the two to each other. And a second bolt that passes through a joint portion provided on the universal shaft joint and a second bearing portion provided on the fixed base and fixes the two to each other.

The LED lighting device according to a fourth aspect of the present invention is the second aspect of the present invention, wherein the radiator is an aluminum extruded member in which the first bearing portion of the first shaft is integrally formed, and a part of the extruded member is formed. It is characterized by being a member that has been decarburized.
In the LED lighting device of the fifth aspect of the present invention, in the fourth aspect of the present invention, the heat radiator is provided with an edge member on the end surface in the extrusion direction of the extruded member so as to be integrated with the edge of the heat radiator. The LED illumination main body has a structure in which a cover is attached to an edge portion of the radiator and the edge member via a packing.

In the LED lighting device of the sixth aspect of the present invention, in the fourth aspect of the present invention, the heat radiator is provided with an edge member that forms an edge so as to surround the entire periphery, and the LED lighting body is attached to the edge member. It is the thing of the structure to which the cover is attached through packing.
The LED lighting device according to a seventh aspect of the present invention is the LED lighting device according to the second aspect, wherein the fixing base is an aluminum extrusion-molded member in which the second bearing portion of the second shaft is integrally formed, and a part of the extrusion-molded member is formed. It is characterized by being a member that has been decarburized.

The LED lighting device according to the eighth aspect of the present invention is the first or second aspect of the present invention, wherein the universal shaft joint is connected to a first bearing portion provided on the radiator and a second bearing portion provided on the fixed base. And an aluminum extrusion-molded member, which is a member obtained by removing a part of the extrusion-molded member.
The LED lighting device of the present invention 9 is characterized in that, in the present inventions 4 to 8, the removal process is a process of removing parts other than necessary parts by machining.

  The LED lighting device according to a tenth aspect of the present invention is characterized in that in the first to ninth aspects of the invention, the structure is a tunnel, and the fixing base is fixed to a side wall or a ceiling of the tunnel.

  The LED lighting device of the present invention is a device with good heat dissipation by making all the main members metal. In particular, when installed in a tunnel, heat can be efficiently radiated to the side wall of the tunnel. In addition, since all the main members are formed by extrusion, the apparatus has high productivity and reduced cost. Furthermore, by adopting a flexible mounting structure, the illumination direction is flexible, the illumination range is widened, and the apparatus can be adapted to any illumination system. Thus, the structure of this invention improved the illumination function.

FIG. 1 is an overall view of an LED lighting device attached to a tunnel side wall. FIG. 2 is an explanatory view showing an illumination state in the tunnel. FIG. 3 is a plan view of the LED lighting device. FIG. 4 is a cross-sectional view taken along the line AA in FIG. FIG. 5 is a cross-sectional view taken along line BB of FIG. 3 taken along line BB. FIG. 6 is an external view showing the configuration of the heat sink that has been thinned after extrusion. FIG. 7 is an external view showing the configuration of a universal shaft joint that has been thinned after extrusion. FIG. 8 is an external view showing the structure of the fixing base that has been thinned after extrusion.

  Embodiments relating to the present invention will be described in detail with reference to the drawings. Although the use purpose of the LED lighting device is not limited, it will be described as a lighting device used in a tunnel. 1 and 2 show the configuration of the LED lighting device 1 attached to the tunnel side wall 8 and the ceiling 28 of the tunnel.

  This LED lighting device 1 includes an LED light emitting device 2 that emits light for illumination inside, and a substrate for an LED drive circuit 3 for driving the LED light emitting device 2 (see FIGS. 4 and 5). A lighting device body 5 having a heat radiating body 4 outside, a fixing base 6 that fixes the lighting device body 5 to the tunnel side wall 8 of the tunnel, and the lighting device body 5 between the lighting device body 5 and the fixing base 6 is illuminated. It is possible to change the direction (illumination direction) to be performed, and it is composed of a universal shaft joint 7 that connects the two to each other. As shown by arrows θ1 and θ2 in FIG. 1, the universal shaft joint 7 can swing in directions different from each other by 90 degrees about the two axes, and can radiate heat from the fixed base 6 to the tunnel side wall 8. ing.

  As described above, the lighting device installed in the tunnel is for the safety of the traveling vehicle and the obstacle on the road surface. In many cases, the lighting in the tunnel is mainly installed on the ceiling 28 so that the road surface and obstacles on the road can be easily recognized by a difference in brightness and brightness. It goes without saying that the lighting device may be installed at a predetermined height position, corner portion or the like of the tunnel side wall 8. There are three illumination methods as shown in FIG.

  In FIG. 2, “A” indicates a symmetrical illumination method, “B” indicates a counter beam method, and “C” indicates a pro-beam method. The symmetric illumination system is an illumination system that uses a luminaire having a symmetrical light distribution with respect to the horizontal axis (lateral direction) of the road R. This is a lighting system in which light fixtures having a light distribution that is substantially symmetrical with respect to the longitudinal direction (vertical axis) of the road R are used and light is distributed symmetrically with respect to the traveling direction of the vehicle. The counter beam illumination method is such that the light distribution of the luminaire is asymmetric with respect to the horizontal axis of the road (asymmetric illumination), and faces the direction of travel of the traveling vehicle Ca (counter) (in the opposite direction of the travel direction). This is an illumination method with the optical axis directed. The pro-beam illumination method is asymmetric illumination and illuminates with the optical axis directed in the traveling direction of the traveling vehicle Ca. As described above, a lighting device having a method according to the purpose is used. The LED lighting device 1 of the present invention can basically be adapted to any method.

  Next, according to FIGS. 3-8, the structure of the LED lighting apparatus 1 is demonstrated in detail. 3 is a plan view of the LED lighting device 1, FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, and FIG. 5 is a cross-sectional view taken along line BB of FIG. FIG. 6-8 has shown the single-piece | unit structure of the main member. In the figure, the illuminating device main body 5 is attached to the fixed base 6 via the universal shaft joint 7 to form the LED illuminating device 1 as described above. The fixed base 6 is fixed at a predetermined height position on the tunnel side wall 8, but may be fixed to the ceiling 28.

  The frame body of the illuminating device body 5 is configured as a heat radiating body 4, and a plurality of LED light emitting devices 2 for illumination are provided therein. A plurality of support members 13 are provided in a convex shape inside the radiator 4. A substrate for the LED drive circuit 3 is provided on the support member 13, and a plurality of LED light emitting devices 2 are provided on the substrate. In order to limit the illumination direction, the support member 13 can have a member configuration in which the angle of the surface on which the LED light emitting device 2 is provided is changed.

  In the illuminating device main body 5 shown in FIG. 4, two sets of LED light-emitting devices 2 on one side are attached to a surface inclined by 45 degrees with respect to the attachment surface 4d of the radiator 4, and two sets of LED light-emitting on the other side. The apparatus 2 is configured to be mounted on a surface parallel to the mounting surface 4d of the radiator 4. A cover 9 is provided on the heat radiating body 4 so as to cover the inside of the heat radiating body 4. The cover 9 is a member made of transparent glass (or light transmissive resin). In addition, the cover 9 should just be a member with good light transmittance. The peripheral edge portion of the cover 9 is a flange 9 a and is aligned with the peripheral edge portion of the radiator 4.

  A packing 10 molded in an endless configuration is attached to the radiator 9 across the flange 9a at the edge. The packing 10 is attached to the periphery of the cover 9 and is pressed by the cover retainer 11 around the edge of the heat radiating body 4 through the flange 9a so that the inside can be sealed. The cover retainer 11 has a screw hole formed on the surface on the radiator 4 side. The screw portion of the bolt 12 inserted into the bolt hole from the side of the radiator 4 is screwed into the screw hole portion of the cover retainer 11 and is fixed to the radiator 4 with the cover 9 and the packing 10 interposed therebetween. Yes. The cover 9, the packing 10, and the cover holding member 11 are all rectangular members, but their edges are R-shaped.

  Outside the radiator 4, the radiation fins 4 a and the first bearing portion 4 b having a through hole are configured. The heat radiating fins 4 a are for radiating heat generated from the LED light emitting device 2. What is necessary is just to set the length of this fin 4a to the dimension which is most suitable for a thermal radiation effect. Therefore, it is not necessary to arrange the fins 4a at a uniform height, and the lengths may be different. A first bearing portion 4b is provided at the outer central portion of the radiator 4 so as to be surrounded by the radiation fins 4a. The first bearing portion 4b is bifurcated so that the joint portion 7a of the universal shaft joint 7 is fitted therebetween. The radiator 4 is provided with a wiring hole 4c. In FIG. 5, the wiring hole 4c is provided on the tunnel side wall 8 side, but the wiring hole 4c may be provided on the edge side. For example, the side wiring of the LED lighting device is effective when the space with the tunnel side wall 8 is limited and the space is narrow by providing it on the side surface of the edge member of the frame configuration described later.

  As shown in FIG. 6, the radiator 4 is a member manufactured by cutting an aluminum extruded member, which is a metal member, by machining (for example, milling). That is, the heat-dissipating element raw material 40 extruded in the direction of the arrow shown in FIG. 6 is cut to a predetermined length, and the unnecessary portion 100 (two-dot chain line) is cut off from the predetermined length by machining to obtain the required The heat dissipating body 4 is shaped as follows. The unnecessary portion 100 scraped off from the heat-dissipating member raw material 40 is only the surplus of the first bearing portion 4b. In addition, the heat radiator 4 should just be a metal body with good heat conductivity.

  The side surface along the extrusion direction of the radiator 4 constitutes the edge of the radiator 4, but the end surface X (see FIG. 6) in the extrusion direction of the radiator 4 is the edge of the radiator 4 of the lighting device body 5. Does not constitute a part. For this reason, when the cover retainer 11 is attached as it is, this portion becomes a space portion. In order to configure the illuminating device main body 5 in which no space is formed, a plastic edge 14 corresponding to the edge of the radiator 4 is integrally attached to the radiator 4 at this portion. In other words, the edge part of the plastic edge part 14 is comprised by the same cross-sectional shape so that the edge part of the heat sink 4 may be followed (refer FIG. 4, 5). The plastic edge portion 14 has an R shape along the shape of the cover presser 11 shown in FIG.

  The plastic edge 14 is attached to the radiator 4 so that the plastic edge 14 is integrated with the radiator 4 which is an aluminum body (metal body). A method of injection-molding a thermoplastic resin composition which is the invention of the present applicant (see, for example, JP-A-2007-175873), and integrally bonding aluminum (metal) and resin inserted in a mold It may be. By providing this plastic edge 14, the sealing performance inside the radiator 4 is maintained. For the cover retainer 11, the plastic edge 14 is sandwiched between L-shaped stays 15 and fixed with bolts 12. If the mounting hole of the stay 15 is formed in a long hole shape, the position adjustment at the time of mounting becomes easy. If the plastic edge 14 is a hard member, the stay 15 is not necessary, and the plastic edge 14 may be directly fixed to the cover retainer 11. This embodiment is configured to be fixed by the stay 15.

  The shape of FIG. 6 is configured such that an edge is provided on the side surface along the extrusion direction of the radiator 4, but the radiator 4 may have a configuration without an edge. In this case, a portion corresponding to the edge is an edge member having a frame structure integrated with the plastic edge 14 (not shown). This edge member is attached so as to surround the entire periphery of the radiator. With this configuration, the shape of the heat radiating body is further simplified as an extruded member, and the periphery of the heat radiating member is closely fixed by the surrounded edge member. In this case, the cover 9 can be directly adhered and fixed to the edge member having a seamless frame structure via the packing 10. The shape of the packing is not an L-shaped cross section as shown in the figure, and may be a packing having a plurality of concave and convex cross-sectional shapes. For example, it may have a concave-convex cross-sectional shape along the cross-sectional shape of the cover 9 in contact with the side surface of the cover 9, the upper and lower surfaces of the flange 9a, and the side surface.

  As shown in FIG. 7, the universal shaft joint 7 attached to the radiator 4 is a member manufactured by cutting an aluminum extruded member, which is a metal member, by machining (for example, milling). That is, the universal shaft joint raw material 70 extruded in the direction of the arrow shown in FIG. 7 is cut to a predetermined length, and unnecessary portions 200 (two-dot chain lines) are cut off from the predetermined length by machining to obtain the required The universal joint 7 has a shape. The unnecessary portion 200 scraped off from the universal shaft joint raw material 70 is a surplus of the bifurcated joint portion 7b. The universal shaft joint 7 may be a metal body having good thermal conductivity.

  The first bearing portion 4b and the joint portion 7a are provided with a through hole 17 having the same diameter, and a clamp bolt 18 is inserted therein. The first bearing portion 4b and the joint portion 7a are rotatable with respect to the clamp bolt 18 as an axis. That is, the illuminating device body 5 can swing with respect to the universal joint 7. When the relative position associated with the swinging of the lighting device body 5 and the universal shaft joint 7 is determined, the clamp bolt 18 is screwed by the nut 19. By this screw tightening, the first bearing portion 4b and the joint portion 7a are sandwiched and clamped between the clamp bolt 18 and the nut 19.

  The universal shaft joint 7 is provided with a bifurcated joint portion 7b that is displaced in position from the first shaft in the direction orthogonal to the first shaft of the first bearing portion 4b and constitutes the second shaft. The second bearing portion 6a is fitted between them. As shown in FIG. 8, the fixed base 6 to which the bifurcated joint portion 7b of the universal shaft joint 7 is made is a member made of a metal made of aluminum and cut by machining (for example, milling). . That is, the fixed base raw material 60 extruded in the direction of the arrow shown in FIG. 8 is cut to a predetermined length, and the unnecessary portion 300 (two-dot chain line) is cut from the predetermined length by machining to have a required shape. This is a fixed base 6. In addition, the fixing base 6 should just be a metal body with good heat conductivity.

  The unnecessary portion 300 scraped off from the fixed base raw material 60 is a surplus of the second bearing portion 6a. The second bearing portion 6a and the bifurcated joint portion 7b are provided with a through hole 20 having the same diameter, and a clamp bolt 21 is inserted therein. With the clamp bolt 21 as an axis, the second bearing portion 6a and the bifurcated joint portion 7b are rotatable relative to each other. That is, the universal shaft joint 7 can swing with respect to the fixed base 6. When the relative position with respect to the fixed base 6 accompanying the swinging of the universal shaft joint 7 is determined, the clamp bolt 21 is screwed by the nut 22.

  By this screw tightening, the second bearing portion 6a and the bifurcated joint portion 7b are sandwiched and clamped between the clamp bolt 21 and the nut 22. As described above, the lighting device main body 5 can be flexibly positioned at any angle in two directions (θ1 and θ2 directions in FIG. 1) that are 90 degrees apart by a relative swinging motion with the universal joint 7. . The through-hole 17 into which the clamp bolts 18 and 21 are inserted, the through-hole 20 and the end face of each member are machined after extrusion, so that they have accurate dimensions and shapes.

  In this way, the universal joint 7 can swing in two axial directions (θ1 and θ2 directions in FIG. 1) whose directions are changed by 90 degrees, so that the lighting device body 5 changes its direction in a predetermined direction in the tunnel. Can be illuminated. After determining the optimal illumination direction while adjusting the illumination direction at the site, the illuminating device body 5 is fixed to the fixed base 6 together with the universal shaft joint 7 by the clamp bolt 18 and the nut 19 and the clamp bolt 21 and the nut 22. . In order to maintain a constant position for a long period of time, after adjusting the angular position, screws may be fixed to the clamp bolts from the side surfaces of each member by screws.

  Further, the radiator 4, the fixed base 6, and the universal shaft joint 7 are all manufactured from an extrusion-molded member. This has significantly improved productivity. That is, extrusion molding has an advantage that a basic shape member can be formed only by an extrusion process. A desired member can be formed in a short time only by cutting this into a predetermined length and removing the surplus by machining. The surplus machining can also be applied to several raw materials simultaneously.

  The present invention applies this. Therefore, compared with what was manufactured by methods, such as die-casting, what was manufactured from the extrusion molding member can be made low-cost. In other words, all the main members are made from extruded members, so that a large amount of LED lighting devices 1 installed in a tunnel or the like can be provided at a low cost. And all the main members are made of metal. In the present embodiment, the material of the main member is all described as aluminum, but other metals may be used. However, since long-term use is involved, there is a need for a metal that does not generate rust (a metal that has been rust-proofed).

  Thereby, the illuminating device main body 5 came to be able to improve heat dissipation. In part, the heat radiating body 4 is provided with heat radiating fins 4a to radiate heat from the heat radiating fins 4a to the atmosphere. Moreover, the illuminating device main body 5 is supplemented by using a member having good heat conduction in order to cope with heat radiation accompanying the installation of the plurality of LED light emitting devices 2 and further enhance the heat radiation effect. Since metal such as aluminum has good thermal conductivity, the heat generated in the LED light emitting device 2 is transferred to the universal shaft joint 7 and the fixed base 6 side. The moved heat is released into the atmosphere from the outer peripheral surfaces of the universal shaft joint 7, the fixed base 6 and the like, and is radiated to the ground through the tunnel side wall 8.

  In the present embodiment, the configuration in which the heat radiating fins 4 a are provided only on the heat radiating body 4 has been described. However, a configuration in which the heat radiating fins are provided in other portions, for example, the universal shaft joint 7 and the fixed base 6 may be used. Moreover, in order to improve the heat dissipation effect, the fixed base 6 may have a structure in which a member that dissipates heat is attached to the fixed base 6 and embedded in the ground. The illuminating device main body 5 can cope with the above-described three illumination methods. For example, if the support member 13 that attaches the LED light-emitting device 2 to the surface inclined at a predetermined angle with respect to the attachment surface 4d of the radiator 4 is configured at the center, the counter beam illumination method or the pro beam illumination method can be supported. . Furthermore, if the support member 13 that attaches the LED light emitting device 2 to the surface parallel to the attachment surface 4d of the radiator 4 is configured as a center, it is possible to support a symmetrical illumination system. In the description of the present embodiment, the LED illumination device is applied to tunnel illumination, but can be applied to illumination in other fields.

  As mentioned above, although embodiment of this invention was described, it cannot be overemphasized that this invention is not limited to this form, and can change within the range which does not deviate from the objective of this invention and the meaning.

DESCRIPTION OF SYMBOLS 1 ... LED illuminating device 2 ... LED light-emitting device 3 ... LED drive circuit 4 ... Radiator 5 ... Illuminating device main body 6 ... Fixing stand 7 ... Universal shaft joint 8 ... Tunnel side wall

Claims (10)

An LED light emitting device (2) that emits illumination light, an LED driving circuit (3) for driving the LED light emitting device, and a metal body having good thermal conductivity, the LED light emitting device and the LED driving circuit A lighting device main body (5) having a built-in radiator (4) integrally formed with a radiation fin (4a) for radiating heat generated from the LED light emitting device (2);
A metal body having good thermal conductivity, the fixing device (6) for fixing the lighting device body (5) to a structure;
Heat from the heat radiating body (4) is transferred to the fixing base (6), the heat radiating body (4) and the fixing base (6) are connected to each other, and an arbitrary axis centering on two orthogonal axes An LED lighting device comprising: a metal universal shaft joint (7) that can swing at an angular position and can be fixed to the radiator (4) and the fixing base (6). The LED lighting device according to claim 1,
The universal shaft joint (7) is a structure of a universal shaft joint in which a first axis and a second axis orthogonal to the first axis intersect, and is fitted into each of the first axis and the second axis. And an LED illumination device characterized by comprising clamp means (18, 21) for fixing the illumination device main body (5) to the fixed base (6) at an arbitrary swing angle position. The LED lighting device according to claim 2,
The clamp means (18, 21) passes through a joint portion (7a) provided on the universal shaft joint and a first bearing portion (4b) provided on the heat radiating member, and fixes the two to each other. It comprises a bolt, a joint part (7b) provided in the universal shaft joint, and a second bolt that penetrates the second bearing part (6a) provided in the fixed base and fixes them together. LED lighting device. The LED lighting device according to claim 2,
The heat dissipating body (4) is an aluminum extruded member in which the first bearing portion (4b) of the first shaft is integrally formed, and is a member obtained by removing a part of the extruded member. LED lighting device characterized by this. The LED lighting device according to claim 4,
The heat radiator (4) is provided with an edge member (14) on the end surface in the extrusion direction of the extrusion member so as to be integrated with the edge of the heat radiator, An LED lighting device, characterized in that a cover (9) is attached to the edge of the radiator and the edge member via a packing (10). The LED lighting device according to claim 4,
The heat radiating body (4) is provided with an edge member that forms an edge so as to surround the entire periphery, and the LED illumination main body covers the edge member via a packing (10). An LED lighting device characterized in that is attached. The LED lighting device according to claim 2,
The fixed base (6) is an aluminum extruded member in which the second bearing portion (6a) of the second shaft is integrally formed, and is a member obtained by removing a part of the extruded member. LED lighting device characterized by this. The LED lighting device according to claim 1 or 2,
The universal shaft joint (7) has joint portions (7a, 7b) connected to a first bearing portion (4b) provided on the radiator and a second bearing portion (6a) provided on the fixed base. An LED lighting device, wherein the extruded member is a member obtained by removing a part of the extruded member. The LED lighting device according to claim 1, which is selected from claims 4 to 8.
The said thinning process is a process which cuts and removes a part other than a required part by machining. LED lighting device characterized by the above-mentioned. LED lighting device according to claim 1, selected from claims 1 to 9,
The structure is a tunnel, and the fixing base (6) is fixed to a side wall (8) or a ceiling (28) of the tunnel.

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