JP2017510964A - LED lighting device - Google Patents

Abstract

The present invention provides an LED illumination device that illuminates using an LED element. One or more metal plates and one or more LED elements provided on a surface of the metal plate, wherein the LED element has only one of the first electrode and the second electrode coupled to the metal plate. An LED lighting device is disclosed.

Description

  The present invention relates to an LED lighting device. More specifically, the present invention relates to an LED illumination device that illuminates using an LED element.

  In general, lighting devices are widely used for lighting indoors or outdoors, or for notification means such as traffic signal lights and warning lights.

  Mainly used as a lighting device is a filament that emits light while being heated to a high temperature when current is supplied. Recently, it has low power consumption, excellent light brightness, and a long-life LED (light emission). A lighting device using a diode) has attracted attention.

  However, since LEDs have strong light straightness, low light diffusion characteristics, and low side illuminance, they are not sufficient to replace conventional illumination devices using filaments.

  1 and 2 are diagrams showing a conventional lighting apparatus 1 having a bulb-type bulb 10 in an automobile. As shown in the drawing, the conventional luminaire 1 has a reflection member 20 that is optimized for functional implementation together with a headlamp and a fog lamp.

  In particular, the reflecting member 20 has a light reflecting portion 11 of the bulb-type bulb 10, that is, the position of the filament, for example, the distance from the socket 12 coupled in the lighting fixture 1 to the automobile whose reflecting surface is shown in FIG. It was common to be optimized and designed for l.

  However, when the conventional lighting fixture 1 having the above-described structure is to be changed to an LED lighting fixture, unlike the conventional bulb-type bulb 10 that is irradiated in almost all directions, the forward advanceability in one direction is possible. Due to the light characteristics of the LED having the above, it is impossible to recycle the reflecting member 20 in the conventional lighting device 1, and a separately designed reflecting member is required.

  Furthermore, when replacing a conventional lighting fixture having a bulb-type bulb with an LED lighting fixture, there is a problem that the replacement cost is high, such as redesigning of the reflecting member, and the LED lighting fixture has a use effect and an obstacle to diffusion. there were.

  An object of the present invention is to provide an LED lighting device that can have a similar lighting effect in a conventional lighting facility without a separate structural change.

  Another object of the present invention is to provide an LED illumination that can replace a conventional bulb-type light bulb without a separate structural change in a conventional lighting assembly such as a headlight or a fog light of an automobile that uses the bulb-type bulb. Is to provide a device.

  Still another object of the present invention is to provide an LED illumination that can have a lighting effect similar to that of a bulb-type bulb without a separate structural change in a conventional illumination facility having a reflective shade optimized for a bulb-type bulb. Is to provide a device.

  Still another object of the present invention is to provide a light source positioned by a bulb-type light bulb in a conventional light fixture having a light bulb optimized by two or more light sources, particularly in an automobile lighting device. It is providing the LED illuminating device which can have a lighting effect similar to a bulb-type light bulb by positioning an LED element corresponding to, without a separate structural change.

  The present invention has been created to achieve the above-mentioned object of the present invention. The present invention includes one or more metal plates, and one or more LED elements provided on the surface of the metal plates. The LED device is disclosed in which only one of the first electrode and the second electrode is coupled to the metal plate and the metal plate.

  The present invention also includes a metal plate and one or more LED elements provided on a surface of the metal plate, wherein the LED element is coupled to the metal plate and the metal plate only by heat slug. A featured LED lighting device is disclosed.

  The present invention also includes a socket part 230 for coupling with a structure provided with the LED lighting device, and one end of the first LED element 120a on the opposite surface of the socket part 230 coupled to the socket part 230. The pair of first metal plates 110-5 and the pair of first metal plates 110-5 are parallel to the pair of first metal plates 110-5, and one end is coupled to the socket part 230. The pair of second metal plates 110-6 each provided with the second LED element 120b on the opposite surfaces of the surfaces facing each other, and the pair of second metal plates 110-6 between the pair of second metal plates 110-6. -1 is a curved surface portion 1 that is parallel to -6, one end of which is coupled to the socket portion 230, and is bent so as to be perpendicular to the second metal plate 110-6. 3 so that the space between the one or more third metal plates 110-7 having the third LED element 120 c provided on the folding surface portion 113 and the first to third metal plates is maintained. And an interval holding member 280 to which the other ends of the first to third metal plates are coupled to each other.

  The first to third LED elements 120a, 120b, and 120c may be coupled to each of the first to third metal plates so that only one of the first electrode and the second electrode can conduct heat.

The first metal plate 110-5 may be formed with a notch 310 that is notched so that the second LED element 120b provided on the second metal plate 110-6 positioned on the inside is exposed to the outside.
The first LED element 120a and the second LED element 120b may be provided to have different distances from the socket part 230.

  The LED lighting device is provided in an automobile headlight instead of a light bulb having two filaments so that a high light beam and a low beam can be produced by a single light bulb, and any one of the first LED element 120a and the second LED element 120b. One may be located at the position of the filament corresponding to the high beam and the other one may be located at the position of the filament corresponding to the low beam.

  A first terminal 237 and a second terminal 238, which are provided in the socket unit 230, and connect one of the first LED element 120a and the second LED element 120b and the third LED element 120c in series or in parallel; The second terminal 238 and a third terminal 239 connecting the remaining one of the first LED element 120a and the second LED element 120b in series are further provided in the unit 230, and share the second terminal 238. At the same time, a power source may be connected to at least one of the first terminal 237 and the third terminal 239.

The first to third metal plates are the remaining electrodes so that only one of the first and second electrodes of the first to third LED elements 120a, 120b, and 120c can conduct heat. A contact preventing means for preventing the contact may be formed at a position corresponding to the non-contact electrode that is not thermally conductive.
The contact preventing means may be a through hole or a notch formed in each of the first to third metal plates.
The non-contact electrode may be connected to a terminal of another LED element or a power connection line for connection to a power supply line via the through hole or the notch.
The contact preventing means may be an insulating member formed on each of the first to third metal plates.

  The socket portion is detachably coupled to the structure, and a terminal connection portion for electrical connection between a main body made of a non-conductive material and a connection terminal provided on the main body and provided on the structure. And an element power supply unit that is electrically connected to the LED element and the terminal connection unit.

  The element power supply unit has a plurality of terminal units electrically connected to the terminal connection unit, and is connected to the main body to support the metal plate, the LED element, and the terminal unit. One or more electric wires connecting the two.

  The LED lighting device according to the present invention has a structure in which the LED element is provided on one or more metal plates, thereby transferring the heat generated from the LED elements to the metal plate and dissipating the heat, and the structure is simple. There is an advantage that heat can be efficiently dissipated.

  In addition, the LED illumination device according to the present invention is configured by a pair of metal plates each having an LED element coupled to the outer surface, which is the opposite surface of the surfaces facing each other, and thus has a light irradiation effect similar to that of a bulb-type bulb. In the conventional lighting device in which the bulb type bulb is used, there is an advantage that the bulb type bulb can be substituted and the utilization degree of the LED lighting device can be maximized.

In particular, conventional lighting facilities that use bulb-type light bulbs are characterized by having a reflective shade, and at this time, the reflective shade is optimized for the bulb-type bulb, especially the light-emitting part of the bulb-type bulb. The LED lighting device according to the present invention is configured by providing LED elements on one or more metal plates. In the conventional lighting device in which the bulb type light bulb is used by having the light irradiation effect similar to that of the bulb type bulb by positioning the position of the LED element at a position corresponding to the light emitting part of the conventional bulb type bulb, There is an advantage that the bulb type bulb can be substituted and the utilization of the LED lighting device can be maximized.
As a specific example, the LED lighting device according to the present invention has the following advantages when used for an automotive headlamp, fog lamp, direction indicator lamp, and the like.

  First, LED lighting devices have different lighting characteristics from bulb-type bulbs. Conventionally, LED lighting devices are used as lighting fixtures that require special lighting effects such as automotive headlamps, fog lights, and direction indicators. Had the problem that the design of the reflective shade in lighting fixtures with bulb-type bulbs had to be changed.

  However, the LED lighting device according to the present invention has a light irradiation effect similar to that of a bulb-type bulb by being positioned at a position corresponding to a light-emitting portion of a conventional bulb-type bulb, so that a bulb-type bulb is used. In the conventional lighting device, there is an advantage that the bulb type bulb can be substituted and the utilization of the LED lighting device can be maximized.

  In addition, in a conventional lighting device that includes two filaments having various lighting effects, for example, two filaments having different positions, that is, positions of the light sources, and can simultaneously realize a high beam and a low beam with a single bulb-type light bulb, By locating the LED element correspondingly, there is an advantage that in the conventional lighting device in which the bulb type bulb is used, the bulb type bulb can be substituted and the utilization degree of the LED lighting device can be maximized.

It is the conventional lighting fixture which has a bulb type electric bulb, and is a key map showing an automobile headlamp concretely. It is a side view which shows an example of the bulb-type light bulb used for the automotive headlamp of FIG. It is a perspective view which shows the LED lighting apparatus which concerns on 1st Example of this invention. It is an exploded view which shows a part of LED lighting apparatus of FIG. 3b is a side view of the LED illumination device of FIG. 3a. FIG. 3b is a plan view of the LED illumination device of FIG. 3a. FIG. 3b is a cross-sectional view in the ∨-∨ direction in FIG. 3a. It is sectional drawing of the ∨-∨ direction which shows the example of a change of FIG. It is a side view which shows the LED lighting apparatus which concerns on 2nd Example of this invention. It is a top view of the LED lighting apparatus of FIG. It is a side view which shows the LED lighting apparatus which concerns on 3rd Example of this invention. It is a top view of the LED lighting apparatus of FIG. It is a perspective view which shows the LED lighting apparatus which concerns on 4th Example of this invention. It is a disassembled perspective view which shows the LED lighting apparatus of FIG. It is a top view of the LED lighting apparatus of FIG. It is a side view of the LED lighting apparatus of FIG. It is a conceptual diagram which shows an example of the equivalent circuit schematic of the LED lighting apparatus of FIG. It is a conceptual diagram which shows the example by which the LED lighting apparatus of FIG. 11 was provided in the conventional lighting fixture provided with a bulb-type light bulb. It is a LED illuminating device which concerns on 5th Example of this invention, and is a perspective view which shows the example in which the light difference edge part was further provided in the structure of 4th Example. It is a top view of the LED lighting apparatus of FIG. It is a side view of the LED lighting apparatus of FIG. It is a perspective view which shows the LED lighting apparatus which concerns on 6th Example of this invention. It is a top view of the LED lighting apparatus of FIG. It is an exploded view of the LED lighting apparatus of FIG. It is a top view which shows the 1st metal plate and cover metal plate in the LED lighting apparatus of FIG. It is a top view which shows the 2nd metal plate and cover metal plate in the LED lighting apparatus of FIG. It is a top view of the intermediate | middle metal plate in the LED lighting apparatus of FIG. It is a perspective view which shows the LED lighting apparatus which concerns on 7th Example of this invention. It is a top view of the LED lighting apparatus of FIG. It is an exploded view of the LED lighting apparatus of FIG. It is a top view which shows the 1st metal plate and heat dissipation metal plate in the LED lighting apparatus of FIG. It is a top view which shows the 2nd metal plate and heat dissipation metal plate in the LED lighting apparatus of FIG. It is a top view of the intermediate | middle metal plate in the LED lighting apparatus of FIG. It is a perspective view which shows the LED lighting apparatus which concerns on 8th Example of this invention. It is the perspective view seen from the other direction of the LED lighting apparatus of FIG. It is a disassembled perspective view of the LED lighting apparatus of FIG. FIG. 27 is a side view illustrating a first metal plate, a second metal plate, and an intermediate metal plate of the LED lighting device of FIG. 26, respectively. It is a side view of the LED lighting apparatus of FIG. It is a top view of the LED lighting apparatus of FIG. FIG. 27 is an equivalent circuit diagram of the LED lighting device of FIG. 26. It is a top view which shows the modification of the LED lighting apparatus of 8th Example of this invention. It is a front view of the LED lighting apparatus of FIG. It is a top view which shows the board | substrate of the LED lighting apparatus of FIG. It is a top view which shows a part of manufacturing method of the LED lighting apparatus which concerns on this invention. It is sectional drawing which shows the LED lighting apparatus which concerns on 9th Example of this invention. It is a perspective view which shows the structure of a metal member with the LED lighting apparatus of FIG. It is a top view which shows the metal plate for manufacture of the metal member of FIG. It is sectional drawing of the AA direction of the metal member of FIG. It is a perspective view of the LED lighting apparatus which concerns on 10th Example of this invention. It is a top view which shows the metal plate for manufacture of the metal member of FIG. It is a bottom view which shows the LED lighting apparatus which concerns on 11th Example of this invention. It is sectional drawing of a BB direction in FIG. It is a bottom view which shows the LED lighting apparatus which concerns on 12th Example of this invention. It is sectional drawing of the CC direction of FIG.

  Hereinafter, an LED lighting device according to the present invention will be described in detail with reference to the accompanying drawings.

  The LED lighting device according to the present invention includes at least one metal plate 110 and at least one LED element 120 provided on the surface of the metal plate 110, as shown in FIGS.

  The metal plate 110 is provided with the LED element 120 and has a plate shape so that it can be supported. The metal plate 110 is made of a material having high thermal conductivity such as aluminum, aluminum alloy, copper, copper alloy, and SUS so that heat can be easily released. Any material can be used.

In particular, the metal plate 110 is more preferably copper or a copper alloy in consideration of workability, thermal conductivity, and conductivity.
The thickness of the metal plate 110 is preferably minimized if there is no structural rigidity and manufacturing limit.

  Particularly, the thickness of the metal plate 110 is preferably 0.01 mm to 0.5 mm, and more preferably 0.1 mm to 0.4 mm. However, the thickness of the metal plate 110 is not limited to the above-described numerical value, and may have various thicknesses as required in design.

  In addition, the metal plate 110 may be coated with a highly reflective material such as silver in order to enhance the reflection effect of light emitted from the LED element 120 or the like.

  In addition, the metal plate 110 may be coated with an insulating material to impart an insulating property to at least a part of its surface.

  The metal plate 110 may be plated with nickel. However, since heat dissipation of the metal plate 110 may be hindered by nickel plating, it may be used without nickel plating.

  The metal plate 110 is preferably black-coated with a material such as a black epoxy paint in order to maximize the heat release effect.

  At this time, a part of the LED element 120 may not be coated for bonding with the LED element 120, soldering, or the like.

  In addition, the metal plate 110 may be attached with a wiring for connecting a power source to the LED element 120 or may be printed.

  In addition, the metal plate 110 may have a circuit pattern.

  In addition, the metal plate 110 may be coupled to a board such as an FPCB on which the LED element 120 is provided.

  In addition, the metal plate 110 may be printed with a synthetic resin material for preventing the solder from coming out of a region other than the solder region for the manufacturing process, i.e., bonding with the LED element 120.

  Meanwhile, the metal plate 110 may have various shapes in consideration of the heat radiation effect of the LED element 120 and the light irradiation effect of the LED element 120 when the metal plate 110 is configured in plural.

  Specifically, as shown in FIGS. 3a and 3b, the metal plate 110 has a flat plate shape, and may have a planar shape similar to a bulb, for example.

  7 to 10, the metal plate 110 includes a bent metal plate 110 including an installation surface portion 112 provided with the LED elements 120 and a bent curved surface portion 113 that is bent and extends from the installation surface portion 112. −1.

  The bent metal plate 110-1 includes a plurality of metal plates 110, and a bent curved surface coupled to a support structure like the socket portion 230 in order to maximize the light irradiation effect of the LED element 120. The installation surface part 112 formed integrally with the part 113 is included.

  At this time, the installation surface portion 112 is a portion that determines the light irradiation direction of the LED element 120, and is formed such that the normal of the surface on which the LED element 120 is provided is parallel to the light irradiation direction of the LED element 120. .

  The folding surface portion 113 is a portion that is integrally supported with the installation surface portion 112, and is parallel (most preferably), perpendicular, and inclined to the adjacent metal plate 110, and is a supporting structure like the socket portion 230. Various configurations are possible.

  On the other hand, it is preferable that the metal plate 110 is composed of a plurality of pieces, and in the case where a plurality of the metal plates 110 are formed, at least a part of the plurality of metal plates 110 is parallel to the surface on which the LED elements 120 are provided. It is provided so as to make a vertical or inclined.

  The metal plate 110 as described above is 1) directly and firmly supporting the LED element 120 [For reference, in the case of FPCB, the LED element 120 cannot be supported by itself, and a synthetic resin material with low thermal conductivity is used. The heat release effect is significantly low. In the case of a metal PCB, the presence of an insulating layer for insulation between the printed circuit board and the metal layer (aluminum), specifically, the LED element 120, solder, copper wiring, adhesive layer, insulating layer, adhesive layer, and aluminum The heat is transferred in the order of the metal layers, and at the time of heat release, due to the bottleneck phenomenon at the exit, the effect of heat release is low and there is a problem that it is thick overall. By directly connecting to any one of the first terminal 121 and the second terminal 122, it is possible to perform the role of an electrical conductor for supplying power to the LED element 120. 3) Heat is transmitted from the LED element 120. , The role of the heat dissipating member for dissipating heat, in particular, connected to at least one of the first terminal 121, the second terminal 122, and the heat slug 124 of the LED element 120 by soldering or the like. 4) Despite its simple structure, it is positioned at the optimum position for the light-emitting part (filament) of the bulb-type bulb, and the effect of utilizing the conventional reflective shade is enhanced. be able to.

  The LED element 120 is an LED element that emits light when supplied with DC power, and is a white LED element that emits white light, a yellow LED element that emits yellow light, a blue LED element, a red LED element, a green LED element, “blue”. Various LED elements such as a three-color LED chip in which “LED elements, red LED elements, and green LED elements” are formed as one chip may be used.

  Further, the LED element 120 is preferably a chip including one LED semiconductor element.

  As an example, the LED element 120 may include a first electrode 121 and a second electrode 122 which are a + terminal and a − terminal, as shown in FIG. 5.

  Further, as shown in FIG. 5, the LED element 120 may further include a heat slug 124 for releasing heat in addition to the first electrode 121 and the second electrode 122 which are the + terminal and the − terminal.

  The heat slug 124 is configured to release heat generated from the LED element, and may be configured integrally with the first electrode 121 and the second electrode 122 according to the structure.

  For reference, FIG. 5 is a structure for illustrating the first electrode 121, the second electrode 122, and the heat slug 124 in the LED element 120, and may actually differ from the structure of the LED element.

  Meanwhile, when the LED element 120 is coupled to the metal plate 110, only one of the first electrode 121 and the second electrode 122 may be coupled to the metal plate 110 so as to be able to conduct heat.

  In addition, when the LED element 120 further includes a heat slag 124, only the heat slag 124 may be coupled to the metal plate 110 so as to be able to conduct heat with the metal plate 110.

  At this time, the LED element 120 may be directly coupled to the metal plate 110 as shown in FIGS.

  In this case, only one of the first electrode 121 and the second electrode 122 of the LED element 120 needs to be energized with the metal plate 110, and the electrode that is not energized with the metal plate 110 is electrically connected to the metal plate 110. So as to be insulated.

  Specifically, the metal plate 110 corresponds to a non-contact electrode that is not thermally conductive to the remaining electrodes so that only one of the first electrode 121 and the second electrode 122 of the LED element 120 can conduct heat. The contact preventing means 111 for preventing the contact may be formed at the position where the contact is made.

  The contact preventing means 111 may be a through hole formed in the metal plate 110 as shown in FIG. 5, or may be formed of a notch as shown in FIGS.

  At this time, as shown in FIG. 5, the non-contact electrode has a through-hole or a cut-out portion of a power connection line 250 for connection with a terminal of another LED element or connection with a power supply line (see FIG. 5). 7 and the notch formed in FIG. 9).

  The power connection line 250 can be used to maintain the interval between the metal plates 110 arranged in parallel by being connected to the LED elements 120 in the first embodiment described later. Here, the interval between the metal plates 110 arranged in parallel can be maintained by an interval holding member 280 described later.

  On the other hand, when connected to the LED element 120 provided on the adjacent metal plate 110 instead of the power supply connection line 250, the LED element 120 provided on the adjacent metal plate 110 due to the cut end of the metal plate 110 of the same material. And may be electrically connected.

  Further, as another example, the contact preventing unit 111 may be formed of an insulating member 111 formed on a metal plate 110 as shown in FIG.

  The insulating member is configured to electrically insulate between the LED element 120 and the metal plate 110, and may be variously configured with an insulating material coated on the surface of the metal plate 110, an attached insulating tape, and the like.

  On the other hand, unlike the example of FIG. 5, only the heat slug 124 that is electrically insulated from the first electrode 121 and the second electrode 122 is coupled to the metal plate 110 so as to be able to conduct heat with the metal plate 110. The LED element 120 is provided such that the first electrode 121 and the second electrode 122 are electrically insulated from the metal plate 110.

  Further, unlike the example of FIG. 5, the LED element 120 may be attached to a printed circuit board (not shown) coupled to the metal plate 110 instead of being directly coupled to the metal plate 110. In this case, the printed circuit board may be configured such that one of the first electrode 121 and the second electrode 122 can conduct heat with the metal plate 110 as in the case where the LED element 120 is directly coupled to the metal plate 110. It can be coupled to the metal plate 110.

  Meanwhile, the LED element 120 may be provided with a reflector in the vicinity thereof in order to improve the light divergence angle and the furniture.

  Meanwhile, the LED lighting device according to the present invention has a basic structure of the LED element 120 and the metal plate 110 to which the LED element 120 is coupled, and the metal plate 110 is arranged in parallel to each other by being constituted by a plurality. Alternatively, it is possible to configure lighting fixtures having various lighting effects by various arrangement combinations such that some of them are arranged with an inclination.

  In particular, the LED element 120 according to the present invention and a plurality of basic structures of the metal plate 110 to which the LED elements 120 are coupled may be configured to have a lighting effect like a bulb-type bulb. In particular, by substituting bulb type bulbs for lighting fixtures such as automotive headlamps, fog lamps, and direction indicator lamps that use bulb type bulbs, it is possible to maximize the utilization effect of the LED lighting device.

  Hereinafter, the LED lighting device according to the present invention will be described for use in lighting fixtures such as automotive headlamps, fog lamps, and direction indicator lamps.

  The LED lighting device according to the first embodiment of the present invention has a basic structure of an LED element 120 and a metal plate 110 to which the LED element 120 is coupled, as shown in FIGS. The first metal plate and the second metal plate may be configured to be disposed in parallel with each other and provided with one or more LED elements 120 on opposite surfaces of the surfaces facing each other.

  A socket 230 for coupling with a structure provided with an LED lighting device, that is, a lighting device for an automobile, may be coupled to one end of the pair of metal plates 110.

  Here, the metal plate 110 may be coupled to the socket unit 230 by various methods such as fixed coupling or detachable coupling.

  The socket part 230 is a structure for coupling with a structure provided with an LED lighting device, that is, an automotive lighting fixture, and various configurations are possible depending on the coupling mode with the structure provided.

  As an example, the socket part 230 is a terminal connection for electrical connection between a main body 231 detachably coupled to a structure and a connection terminal (not shown) provided on the main body 231 and provided on the structure. The device 240 may include an element power supply unit 260 that is electrically connected to the LED unit 120 and the terminal connection unit 240.

  The main body 231 is configured to stably couple the LED lighting device to the structure, and may be configured of one or more members, and various configurations such as an insulating material or a combination of a metal and an insulating material are possible. .

  The terminal connection part 240 is provided on the main body 231 and is configured for electrical connection with a connection terminal (not shown) provided on the structure, and various configurations are possible depending on the terminal connection method. If necessary, the main body 231 may be integrated.

  The element power supply unit 260 is configured to be electrically connected to the LED element 120 and the terminal connection unit 240, and various combinations such as a substrate, an electric wire, and a conductive member depending on the connection structure between the terminal connection unit 240 and the LED element 120. It is possible to configure by.

  For example, as shown in FIGS. 4A and 4B, the device power supply unit 260 is coupled to the metal plate 110 and supports the metal plate 110, while being coupled to the terminal connection unit 240, and the LED. And a connecting portion 262 for supplying power to the element 120.

  Here, the metal plate 110 may be electrically connected to any one of the first electrode and the second electrode of the LED element 120.

  The substrate 261 supports the metal plate 110 and is coupled to the terminal connection part 240, and various configurations are possible. Various configurations are possible, such as forming an insertion hole 261a into which at least one protrusion 119 of the metal plate 110 is inserted, and forming a circuit pattern for energization between the terminal connecting portion 240 and the LED element 120. .

  The substrate 261 can constitute a part or the whole of the main body 231 forming the socket part 230.

  The connection part 262 is a part for supplying power to the LED element 120. As shown in FIGS. 4a and 4b, various configurations such as a solder part and electric wires as shown in FIGS. 7 to 10 are possible. It is.

  Meanwhile, as another configuration of the element power supply unit 260, as shown in FIGS. 7 to 10, a plurality of terminal units 265 electrically connected to the terminal connection unit 240 are formed and coupled to the main body 231. The substrate 261 supporting the metal plate 110 and one or more electric wires 263 connecting the LED element 120 and the terminal portion 265 may be included.

  Here, the electric wire 263 can be any electric conductive member such as a copper wire and an iron wire, in addition to the electric wire used in which a copper wire is provided in a synthetic resin.

  In particular, the electric wire 263 is preferably made of copper or a copper alloy material for releasing heat by itself, and more preferably formed on the outer surface without a coating of an insulating material.

  Meanwhile, when one end of the pair of metal plates 110 is connected to a structure in which an LED lighting device is provided, that is, a socket portion 230 for coupling with an automotive lighting fixture, An interval holding member 280 may be further provided to stably maintain the interval between the metal plates 110.

  The interval holding member 280 is configured to stably maintain the interval between the pair of metal plates 110, and is an insulating member such as synthetic resin or PCB, and has a through hole 281 into which the metal plate 110 can be inserted. By inserting the metal plate 110, the pair of metal plates 110 can be fixedly coupled.

  Meanwhile, when the pair of metal plates 110 are coated with a material such as an epoxy paint, they are electrically insulated, and thus can be provided in a face-to-face relationship with each other.

  On the other hand, in the LED lighting device according to the first embodiment of the present invention, the arrangement and position of the LED elements 120 vary depending on the characteristics of the bulb-type bulb of the lighting fixture to be replaced.

  Specifically, the LED lighting device according to the first embodiment of the present invention is provided in any one of an automotive headlamp, a fog lamp, a direction indicator lamp, and a rear lamp of an automobile provided with a bulb-type bulb, and an LED element. As shown in FIG. 4a, 120 is coupled to the metal plate 110 so as to be located at a position corresponding to the light emitting portion of the bulb type bulb, that is, the position of the filament when the bulb type bulb is installed in the automobile. obtain.

  Specifically, in the bulb-type light bulb, the LED element 120 may be provided on the metal plate 110 so as to have a distance l from the socket part 230 so as to correspond to the distance l from the socket part 12 to the light emitting part 11.

  On the other hand, when the LED lighting device according to the present invention is provided in any one of an automotive headlamp, a fog lamp, a direction indicator lamp, and a rear lamp of a vehicle provided with a bulb-type light bulb, It is necessary to enhance the light emission characteristics in the side surface direction or the light emission characteristics in the front surface direction according to the light emission characteristics.

  Therefore, the LED lighting apparatus according to the second and third embodiments of the present invention is installed with the LED element 120 as shown in FIGS. 7 to 10 in addition to the configuration of the first embodiment. The surface portion 112 and one or more bent metal plates 110-1 including the bent surface portion 113 that is bent and extends may be included.

  At this time, as a second embodiment, when the connecting direction with the socket portion 230 is the longitudinal direction, the bent metal plate 110-1 is a method of the installation surface portion 112 as shown in FIGS. One or more first bent metal plates may be included in which the line is perpendicular to the longitudinal direction, that is, the light emitting surface of the LED element 120 faces the side surface.

  Further, as a third embodiment, when the connecting direction with the socket part 230 is a longitudinal direction, the bent metal plate 110-1 has a normal to the installation surface part 112 parallel to the longitudinal direction, that is, an LED. One or more second bent metal plates may be included with the light emitting surface of the element 120 facing forward.

  On the other hand, when the metal plate 110 and the LED element 120 are configured in plural, the equivalent circuit can be configured in various equivalent circuits such as a series, parallel, and series-parallel combination based on each LED element 120.

  Here, the metal plate 110 may be electrically connected to a part of an equivalent circuit, that is, one of the first electrode and the second electrode of the LED element 120.

  Meanwhile, the LED lighting device according to the present invention includes a plurality of metal plates provided with LED elements, and can change various relative positions of the LED elements provided on each metal plate to realize various lighting effects. .

  Hereinafter, the LED lighting apparatus according to the fourth embodiment will be described with reference to FIGS. Here, the LED lighting device according to the fourth embodiment has some differences in configuration such as the arrangement of the metal plates, and is the same as or similar to the configuration in the first to third embodiments described above for convenience. The description is omitted.

  As shown in FIGS. 11 to 15, the LED lighting device according to the fourth embodiment of the present invention includes a socket portion 230 for coupling with a structure provided with the LED lighting device, and one end at the socket portion 230. A pair of first metal plates 110-5 each provided with a first LED element 120a on the opposite surfaces of the surfaces that are coupled and opposed to each other, and the pair of first metal plates 110-5 between the pair of first metal plates 110-5. −5, a pair of second metal plates 110-6 each having a second LED element 120b provided on the opposite side of the surfaces opposite to each other, one end of which is coupled to the socket portion 230, and a pair of first metal plates 110-6. The two metal plates 110-6 are parallel to the pair of second metal plates 110-6, and one end is coupled to the socket portion 230, and is perpendicular to the second metal plate 110-6. Between one or more third metal plates 110-7 having the bent surface portion 113 bent in this manner and having the third LED element 120 c provided on the bent surface portion 113, and the first to third metal plates. And a spacing member 280 to which the other ends of the first to third metal plates are coupled.

  It is preferable that the first LED element 120a and the second LED element 120b are provided at different distances from the socket part 230 so as to be located at positions corresponding to the two light sources.

  The first metal plate 110-5 may be formed with a notch 310 that is notched so that the second LED element 120b provided on the second metal plate 110-6 disposed on the inside can be exposed to the outside. .

  In addition, the LED lighting device may be provided in an automobile headlamp by replacing a light bulb having two filaments so that a high beam and a low beam are possible with a single light bulb.

  At this time, one of the first LED element 120a and the second LED element 120b may be positioned at a filament position corresponding to the high beam, and the other one may be positioned at a filament position corresponding to the low beam.

  In addition, a vehicle headlamp having a structure capable of generating a high beam and a low beam by one LED lighting device includes a reflecting member having an appropriate structure so that the low beam and the high beam can be generated by one LED lighting device.

  The socket part 230 is provided in the socket part 230, the first terminal 237 and the second terminal 238 that connect one of the first LED element 120a and the second LED element 120b and the third LED element 120c in series or in parallel. In addition, a second terminal 238 and a third terminal 239 for connecting the remaining one of the first LED element 120a and the second LED element 120b in series may be further provided.

  With the above configuration, the first LED element 120a and the second LED element 120b are shared by sharing the second terminal 238 and connecting a power source to at least one of the first terminal 237 and the third terminal 239. Each can be turned on and off independently.

  One of the first LED element 120a and the second LED element 120b, for example, the second LED element 120b and the third LED element 120c are made to correspond to the low beam, and the remaining one of the first LED element 120a and the second LED element 120b, for example, the first LED element 120b. By making the 1LED element 120a correspond to a high beam, various lighting effects are possible such that the high beam can be turned on / off according to independent on / off.

  On the other hand, in the case of an automotive headlamp capable of performing a high beam and low beam function with a single LED lighting device, the reflecting member is divided vertically, the upper side functions as a reflecting member for the role of the low beam, and the lower side is a high beam. It functions as a reflective member for the role.

  However, when any one of the first LED element 120a and the second LED element 120b, for example, the second LED element 120b and the third LED element 120c is adapted to the low beam, the third LED element 120c has the generated light directed upward. Although it has a structure and faces the low beam region, the second LED element 120b has a problem that light is directed to the low beam region and the high beam region depending on the radiation angle of the device, and part of the light is exposed to the high beam region during the low beam function. is there.

  Therefore, as shown in FIGS. 16 to 17b, the LED lighting apparatus according to the fifth embodiment of the present invention is an element corresponding to the low beam of the first LED element 120a and the second LED element 120b, for example, the second LED element 120b. The light difference end member 390 may be further included for preventing the high light region from being irradiated with the light.

  The light difference end member 390 is configured to prevent the light corresponding to the low beam of the first LED element 120a and the second LED element 120b, for example, the light of the second LED element 120b from being irradiated to the high beam region. Various configurations are possible.

  Here, the light difference end member 390 has a size that can prevent the light corresponding to the low beam of the first LED element 120a and the second LED element 120b, for example, the light of the second LED element 120b from being irradiated to the high beam region. It is formed.

  In addition, as shown in FIGS. 16 to 17b, the light difference end member 390 is preferably provided on the metal plate 110-5 positioned at the outermost contour.

  Further, as shown in FIGS. 16 to 17B, when the light difference end member 390 is provided on the outermost metal plate 110-5, it is integrated with the outermost metal plate 110-5. With a structured structure, a part of the plate-like plate member may be bent at a certain angle, for example, 90 °.

  In addition, in order to minimize light reflection, the surface of the light difference end member 390 facing the second LED element 120b is preferably non-light-treated, and is preferably applied in black.

  Meanwhile, in the LED lighting devices according to the fourth and fifth embodiments, as in the first to third embodiments, the first to third LED elements 120a, 120b, and 120c include the first electrode and the second electrode. Only one of the electrodes may be coupled to each of the first to third metal plates so as to be able to conduct heat.

  Further, as in the first to third embodiments, the first to third metal plates are only one of the first electrode and the second electrode of each of the first to third LED elements 120a, 120b, and 120c. In order to allow heat conduction, contact preventing means for preventing the contact may be formed at a position corresponding to the non-contact electrode that is not thermally conducted to the remaining electrodes.

  The contact preventing means may be a through hole or a notch formed in each of the first to third metal plates.

The non-contact electrode may be connected to a terminal of another LED element or a power connection line for connection to a power supply line via the through hole or the notch.
The contact preventing means may be an insulating member formed on each of the first to third metal plates.

  On the other hand, in the LED lighting devices according to the first to fifth embodiments, each LED element is positioned at the optimum position of the pre-designed reflective shade while the interval between the metal plates provided with the LED elements is increased. There is a problem that cannot be done.

  In particular, in the case of the second to fifth embodiments, there is a problem that the LED element located on the outermost side with respect to the metal plate located at the center cannot be located at the optimum position of the pre-designed reflective shade. .

  Hereinafter, in the description of the LED lighting apparatus according to the sixth embodiment of the present invention, only the configuration different from the first embodiment will be described, and the same or similar configuration as the first embodiment will be omitted for convenience of description. To do.

  The LED lighting device according to the sixth embodiment of the present invention is a modification of the first embodiment as shown in FIGS. 18 to 21c, and includes an LED element 120 and a metal plate 110 to which the LED element 120 is coupled. On the other hand, the metal plate 110 includes a first metal plate and a second metal plate which are arranged in parallel to each other and on which one or more LED elements 120 are provided on opposite surfaces of the surfaces facing each other.

  The LED lighting apparatus according to the sixth embodiment of the present invention is spaced apart from the first metal plate and the second metal plate so that the LED element 120 is exposed on the surface side where the LED element 120 is provided. A pair of cover metal plates 910 provided.

  As shown in FIGS. 21a and 21c, the pair of cover metal plates 910 includes a first metal plate and a second metal plate, respectively, so that the LED elements 120 are exposed on the surface side where the LED elements 120 are provided. Are provided at intervals, and various configurations are possible.

  In particular, the pair of cover metal plates 910 may have openings 911 so that the LED elements 120 are exposed on the surface side where the LED elements 120 are provided.

  The opening 911 is formed on the cover metal plate 910 so that the LED element 120 is exposed on the surface side where the LED element 120 is provided, and is formed with a notch groove in addition to the hole shape. Various structures are possible.

  Meanwhile, the pair of cover metal plates 910 are integrally connected to the front end or the rear end of the first metal plate and the second metal plate, so that the LED elements provided on the first metal plate and the second metal plate, respectively. The heat generated from 120 is released.

  At this time, an incision line 913 is formed near the boundary between the cover metal plate 910 and the first metal plate, and the boundary between the cover metal plate 910 and the second metal plate, and the protrusion 119 for coupling with the substrate 261 is formed. Can be further formed.

  Here, the substrate 261 is formed with one or more through holes into which the protrusions 119 can be inserted.

  The protrusions 119 are naturally formed when they are bent at the boundary between the cover metal plate 910 and the first metal plate and at the boundary between the cover metal plate 910 and the second metal plate.

  On the other hand, the pair of cover metal plates 910 may be formed with a protrusion 914 for coupling with the spacing member 280 on the opposite side of the portion connected to the first metal plate and the second metal plate. Here, the first metal plate and the second metal plate may be formed with protrusions 915 for coupling with the spacing member 280.

  The pair of cover metal plates 910 are integrally connected to the first metal plate and the second metal plate, thereby more efficiently releasing heat generated from the LED elements 120 and improving the light emission characteristics of the LED elements. be able to.

  Further, the pair of cover metal plates 910 has end portions of the interval maintaining portions 971 that are bent and protruded by the first metal plate and the second metal plate in order to maintain the interval between the first metal plate and the second metal plate. An opening 972 to be inserted may be formed.

  On the other hand, since the first metal plate and the second metal plate provided with the LED element 120 are opposed to each other, the heat generated from each LED element 120 is transmitted to each other, which has a heating effect and prevents this. There is a need.

  Accordingly, an intermediate metal plate 930 provided in parallel with the first metal plate and the second metal plate may be further provided between the first metal plate and the second metal plate.

  The intermediate metal plate 930 is a member that is provided between the first metal plate and the second metal plate and blocks heat from being transmitted to each other, and is made of the same material as the first metal plate and the second metal plate. It is preferable to have.

Meanwhile, the intermediate metal plate 930 may correspond to a portion where the LED element is provided in the first metal plate and the second metal plate, and a cutout portion 931 in which a portion is cut out may be formed.
In addition, the intermediate metal plate 930 may have one or more protrusions 939 so that the intermediate metal plate 930 can be inserted into a through hole formed in the substrate 261 and fixed.

  In addition, the first metal plate and the second metal plate, the cover metal plate 910, and the intermediate metal plate 930 may be black-coated with a material such as black epoxy paint in order to maximize the heat release effect. preferable.

  In particular, the first metal plate, the second metal plate, the cover metal plate 910 and the intermediate metal plate 930 were tested by coating with a black epoxy paint, and as a result, it was confirmed that the heat release effect was much higher.

  Here, the matter coated with black on the surface of the metal plate can be applied to the first to eighth embodiments.

  On the other hand, in the LED lighting device having the above-described structure, when the heat emission is not smooth, the lighting effect of the LED element 120 is reduced. Therefore, a fan 940 may be further provided to increase the lighting effect.

  The fan 940 is configured to generate air flow and cool the LED element 120, and is preferably provided in a direction perpendicular to the plane of the metal plate 110.

  At this time, the metal plate 110, that is, the first metal plate, the second metal plate, the cover metal plate 910, and the intermediate metal plate 930 may have openings 921, 922, and 923 for installing the fan 940.

  The openings 921, 922, and 923 are formed for installing the fan 940, and may have various shapes such as a hole shape or an opening groove shape.

  Further, the fan 940 is provided in front of or behind the LED element 120 in the longitudinal direction connecting the front end and the rear end of the metal plate 110, or as shown in FIGS. Can be provided.

  In the LED lighting device according to the sixth embodiment having the above-described configuration, the metal plate 110 provided with the LED element 120, that is, the interval between the first metal plate and the second metal plate is minimized, and the LED element 120 is provided in advance. It becomes possible to be located at the optimum position of the designed reflective shade.

  Hereinafter, in the description of the LED lighting device according to the seventh embodiment of the present invention, only the configuration different from the first embodiment will be described, and the first and sixth embodiments, in particular, the same as the sixth embodiment, Similar configurations are omitted for convenience of explanation.

  The LED lighting apparatus according to the seventh embodiment of the present invention is a modification of the sixth embodiment as shown in FIGS. 22 to 25c, and includes an LED element 120 and a metal plate 110 to which the LED element 120 is coupled. On the other hand, the metal plate 110 includes a first metal plate and a second metal plate which are arranged in parallel to each other and on which one or more LED elements 120 are provided on opposite surfaces of the surfaces facing each other.

  The LED lighting device according to the seventh embodiment of the present invention is integrally formed with each of the first metal plate and the second metal plate on the surface side where the LED element 120 is provided, and is formed with a 'V' shape. A pair of heat-dissipating metal plates 950 bent into a shape.

  As shown in FIGS. 25a and 25c, the pair of heat radiating metal plates 950 are configured to be spaced apart from the first metal plate and the second metal plate on the surface side where the LED element 120 is provided. There are various configurations possible.

  In particular, the pair of heat radiating metal plates 950 are preferably formed to be short on the surface side where the LED elements 120 are provided so as not to disturb the illumination of the LED elements 120.

  Here, the heat dissipating metal plate 950 is a structure for enhancing the heat dissipating effect by being integrally formed with the first metal plate and the second metal plate to which the LED element 120 is coupled. Various modifications are possible, such as being in close contact with the first metal plate and the second metal plate, or being formed with a long length.

  Meanwhile, the pair of heat radiating metal plates 950 are integrally connected to the front end or the rear end of the first metal plate and the second metal plate, so that the LEDs provided on the first metal plate and the second metal plate, respectively. Heat generated from the element 120 is released.

  At this time, an incision line 953 is formed in the boundary between the heat dissipation metal plate 950 and the first metal plate, and in the vicinity of the boundary between the heat dissipation metal plate 950 and the second metal plate, and the protrusion 119 for coupling with the substrate 261 is formed. Can be further formed.

  The protrusions 119 are naturally formed when bending at the boundary between the heat dissipation metal plate 950 and the first metal plate and at the boundary between the heat dissipation metal plate 950 and the second metal plate.

  The protrusion 119 supports the metal plate 110 and may be inserted and fixed to the board 261 coupled to the terminal connection part 240.

  On the other hand, only one incision line 953 and one protrusion 119 may be formed. However, as shown in FIGS. 22 to 25c, two incision lines 953 and protrusions 119 are formed and supported more stably on the substrate 261 or the like. Can be done.

  The pair of heat-dissipating metal plates 950 are integrally connected to the first metal plate and the second metal plate, thereby more efficiently releasing heat generated from the LED element 120 and improving the light emission characteristics of the LED element. Can do.

  On the other hand, since the first metal plate and the second metal plate provided with the LED element 120 are opposed to each other, heat generated from each LED element 120 is transmitted to each other and has a heating effect, thereby preventing this. There is a need.

  Therefore, an intermediate metal plate 930 provided in parallel with the first metal plate and the second metal plate may be further provided between the first metal plate and the second metal plate.

  The intermediate metal plate 930 is a member that is provided between the first metal plate and the second metal plate and blocks heat from being transmitted, and has the same material as the first metal plate and the second metal plate. Is preferred.

  Meanwhile, the intermediate metal plate 930 may be a first metal plate and a second metal plate corresponding to a portion where the LED element is provided, and a notch 931 having a part cut away may be formed.

  The first metal plate, the second metal plate, the heat radiating metal plate 950, and the intermediate metal plate 930 may be black-coated with a material such as black epoxy paint to maximize the heat release effect. preferable.

  In particular, the first metal plate, the second metal plate, the heat radiating metal plate 950, and the intermediate metal plate 930 were coated with a black epoxy paint, and as a result, it was confirmed that the heat release effect was much higher.

  Here, the black coating on the surface of the metal plate can be applied to the first to eighth embodiments.

  On the other hand, in the LED lighting device having the above-described structure, when the heat emission is not smooth, the lighting effect of the LED element 120 is reduced. Therefore, a fan 940 may be further provided to increase the lighting effect.

  The fan 940 is configured to generate air flow and cool the LED element 120, and is preferably provided in a direction perpendicular to the plane of the metal plate 110.

  At this time, the metal plate 110, that is, the first metal plate, the second metal plate, the heat radiating metal plate 950, and the intermediate metal plate 930 may have openings 921, 922, and 923 for installing the fan 940.

  The openings 921, 922, and 923 are formed for installing the fan 940, and may have various shapes such as a hole shape or an opening groove shape.

  Further, the fan 940 is provided in front of or behind the LED element 120 in a longitudinal direction connecting the front end and the rear end of the metal plate 110, or as shown in FIGS. Can be provided.

  On the other hand, in the case of the seventh embodiment of the present invention, an example in which two LED elements 120 are provided is shown. The number and positions of the LED elements 120 can be set in various ways according to the characteristics of the reflective shade used. .

  The electrodes of the LED element 120 that are not coupled to the metal plate 110 are auxiliary members 960 and 960 that are separated from the metal plate 110 after the LED element 120 is attached in the process of manufacturing the metal plate 110 described later. Is connected to the terminal connection part 240 by a power supply connection line (not shown) connected to the terminal connection part 240 or via the substrate 261.

  The LED lighting apparatus according to the seventh embodiment having the above-described configuration minimizes the distance between the metal plate 110 provided with the LED element 120, that is, the first metal plate and the second metal plate, and the LED element 120. Can be positioned at the optimum position of the pre-designed reflector shade.

  In particular, the LED lighting device according to the seventh embodiment can be provided in an automobile headlight instead of a light bulb having two filaments so that a high light beam and a low beam can be produced by a single light bulb.

  That is, the LED lighting apparatus according to the seventh embodiment is provided in an automobile headlight instead of a light bulb having two filaments so that a high light beam and a low beam can be produced by a single light bulb, and the first LED element 120a. One of the second LED elements 120b may be positioned at a filament corresponding to a high beam, and the other one may be positioned at a filament corresponding to a low beam. At this time, two LED elements, the first LED element 120a and the second LED element 120b, are provided on each of the first metal plate and the second metal plate.

  The first LED element 120a and the second LED element 120b are provided on each of the first metal plate and the second metal plate so that the distance to the socket part 230 is different so as to be located at a position corresponding to the two light sources. preferable.

  That is, one of the first LED element 120a and the second LED element 120b may be positioned at a filament position corresponding to a high beam, and the other one may be positioned at a filament position corresponding to a low beam.

  In addition, a vehicle headlamp having a structure capable of generating a high beam and a low beam by one LED lighting device includes a light blocking member or a reflecting member having an appropriate structure so that the low beam and the high beam can be generated by one LED lighting device.

  Hereinafter, in the description of the LED lighting apparatus according to the eighth embodiment of the present invention, only the configuration different from the first embodiment will be described, and the first to seventh embodiments, particularly the seventh embodiment, are the same. Alternatively, similar configurations are omitted for convenience of explanation.

  The LED lighting apparatus according to the eighth embodiment of the present invention is a modification of the seventh embodiment as shown in FIGS. 26 to 32, and includes an LED element 120 and a metal plate 110 to which the LED element 120 is coupled. On the other hand, the metal plate 110 is arranged in parallel to each other, and the first metal plate 110-a and the second metal plate 110- are provided with one or more LED elements 120 on opposite surfaces of the surfaces facing each other. b.

  The LED lighting apparatus according to the eighth embodiment of the present invention is formed integrally with each of the first metal plate 110-a and the second metal plate 110-b on the surface side on which the LED element 120 is provided, and 'U It includes a pair of heat-dissipating metal plates 950 bent in a letter shape.

  The first metal plate 110-a and the second metal plate 110-b have the same configuration as the metal plates of the first to seventh embodiments described above, and the opposite surfaces are the inner surfaces and vice versa. When the surface is the outer surface, one or more LED elements 120 may be provided on the outer surface.

  Each of the first metal plate 110-a and the second metal plate 110-b is an LED element whose light is blocked in order to prevent the light emitted from the LED element 120 from going downward or upward. The light blocking portions 975 and 976 provided at any one of the upper and lower portions of the 120 may be combined.

  In order to prevent the light emitted from the LED element 120 from traveling downward or upward, the light blocking units 975 and 976 are disposed either directly above or directly below the LED element 120 where the light is blocked. Various configurations are possible.

  In particular, the light blocking portions 975 and 976 may be integrally formed when the first metal plate 110-a and the second metal plate 110-b are formed for the convenience of manufacturing, so as to increase the blocking effect. In addition, it may be bent at an appropriate angle such as 90 °.

  Here, the light blocking portions 975 and 976 may be combined with an adhesive or the like as a separate member instead of being integrally formed with the first metal plate 110-a and the second metal plate 110-b.

  In addition to the light blocking effect, the light blocking units 975 and 976 may be coated or combined with a material that is not coated with black paint or has a high reflectivity in consideration of a reflection effect.

  In addition, when the light blocking portions 975 and 976 are formed integrally with the first metal plate 110-a and the second metal plate 110-b, a plurality of through holes may be formed so as to be easily bent.

  On the other hand, when two or more LED elements 120 are provided on the first metal plate 110-a and the second metal plate 110-b, light blocking portions 975 and 976 may be provided only on at least some of the LED elements 120b. .

  In particular, when two LED elements 120 are provided on the first metal plate 110-a and the second metal plate 110-b, for example, only the LED elements 120b far from the socket part 230 have light blocking parts 975 and 976. Can be provided.

  29a and 29c, the pair of heat radiating metal plates 950 are spaced apart from the first metal plate 110-a and the second metal plate 110-b on the surface side where the LED element 120 is provided. Various configurations are possible.

  In particular, the pair of heat radiating metal plates 950 are preferably formed to be short on the surface side where the LED elements 120 are provided so as not to disturb the illumination of the LED elements 120.

  Meanwhile, the pair of heat radiating metal plates 950 are integrally connected to the front end or the rear end of the first metal plate 110-a and the second metal plate 110-b, so that the first metal plate 110-a and the second metal plate 110-b are connected together. The heat generated from the LED elements 120 provided on each of the metal plates 110-b is released.

  At this time, an incision line 953 is formed near the boundary between the heat radiating metal plate 950 and the first metal plate 110-a and near the boundary between the heat radiating metal plate 950 and the second metal plate 110-b and is inserted into the substrate 261. One or more protrusions 119 may be further formed.

  The protrusions 119 are naturally formed when they are bent at the boundary between the heat dissipation metal plate 950 and the first metal plate 110-a and at the boundary between the heat dissipation metal plate 950 and the second metal plate 110-b.

  The protrusion 119 may be inserted and fixed to the substrate 261 coupled to the terminal connection part 240 while supporting the metal plate 110.

  In particular, the protrusion 119 is connected to the power connection line 250 and can be used as a connection terminal for supplying power to the LED element 120.

  Meanwhile, the incision line 953 and the protrusions 119 may be formed of one or more, that is, two or more.

  The pair of heat dissipating metal plates 950 are integrally connected to the first metal plate 110-a and the second metal plate 110-b, respectively, so that the heat generated in the LED element 120 is more efficiently released, and the LED The light emission characteristics of the element can be improved.

  Meanwhile, the pair of heat radiating metal plates 950 are integrally connected to the first metal plate 110-a and the second metal plate 110-b, respectively, as shown in FIGS. 26, 28, and 29a to 29c. In addition, a surface contact portion 958 that is bent at two points and is in surface contact with the substrate 261 may be formed.

  The surface contact portion 958 is a portion where each of the pair of heat radiating metal plates 950 is integrally connected to the first metal plate 110-a and the second metal plate 110-b, and is in surface contact with the substrate 261. The first metal plate 110-a and the second metal plate 110-b may be stably coupled to the substrate 261.

  In particular, the surface contact portion 958 may be formed with a screw hole 957, through which a screw (not shown) passes, and may be screwed to at least one of the substrate 261 and the socket 230.

  The first metal plate 110-a and the second metal plate 110-b are provided at a predesigned angle with respect to at least one of the substrate 261 and the socket 230 by the screw connection as described above. The LED element 120 can be positioned at a pre-designed position.

  On the other hand, the pair of heat radiating metal plates 950 are preferably provided at a distance from each of the first metal plate 110-a and the second metal plate 110-b, but the terminal ends thereof are the first metal plate 110-a. And it may be bent or hit close to the surface of the second metal plate 110-b.

  Meanwhile, the first metal plate 110-a and the second metal plate 110-b provided with the LED elements 120 are opposed to each other, and heat generated from each LED element 120 is transmitted to each other, so that there is a heating effect. It is necessary to prevent this.

  Accordingly, an intermediate metal plate 930 provided in parallel with the first metal plate 110-a and the second metal plate 110-b may be further provided between the first metal plate 110-a and the second metal plate 110-b. .

  The intermediate metal plate 930 is a member provided between the first metal plate 110-a and the second metal plate 110-b, and is a member for blocking heat transfer, and the first metal plate 110-a and the first metal plate 110-a. It is preferable to have the same material as the two metal plates 110-b.

  On the other hand, the intermediate metal plate 930 is formed with a notch 931 with a part cut away corresponding to the portion of the first metal plate 110-a and the second metal plate 110-b where the LED element 120 is provided. obtain.

  Specifically, the cutout 931 has an outline similar to at least a part of the outline of the first metal plate 110-a and the second metal plate 110-b where the LED elements 120 are provided. Formed as follows.

  Further, the intermediate metal plate 930 is in close contact with the inner side surfaces of the first metal plate 110-a and the second metal plate 110-b so that the LED element 120 is positioned at an optimal position of a pre-designed reflective shade. Is preferred.

  In addition, the intermediate metal plate 930 may be bonded by an adhesive material having high heat resistance when the intermediate metal plate 930 is tightly coupled to the inner surfaces of the first metal plate 110-a and the second metal plate 110-b.

  The intermediate metal plate 930 is a protrusion that is inserted into a through hole 261b formed in the substrate 261 in a state where the intermediate metal plate 930 is tightly coupled to the inner surfaces of the first metal plate 110-a and the second metal plate 110-b. Preferably 939 is formed.

  The protrusion 939 is inserted into a through-hole 261b formed in the substrate 261 so that an intermediate metal plate 930 tightly coupled to the inner surfaces of the first metal plate 110-a and the second metal plate 110-b is formed. The substrate 261 is stably supported.

  The through-hole 261b is preferably formed in a slot shape so that the plate-shaped protrusion 939 is inserted.

  Meanwhile, the first metal plate 110-a and the second metal plate 110-b, the heat radiating metal plate 950, and the intermediate metal plate 930 are made of a material such as a black epoxy paint in order to maximize the heat release effect. Black coating is preferred.

In particular, the first metal plate 110-a, the second metal plate 110-b, the heat radiating metal plate 950, and the intermediate metal plate 930 have a much higher heat release effect as a result of experiments with a black epoxy coating. Was confirmed.
Here, the black coating on the surface of the metal plate can also be applied to the first to eighth embodiments.

  Meanwhile, the first metal plate 110-a, the second metal plate 110-b, and the intermediate metal plate 930 are configured to block light toward the front side at the opposite end coupled to the substrate 261. 973 can be further coupled.

  The light blocking member 973 may be used in various ways, such as blocking the light from the LED element 120 from being directly irradiated forward.

  The substrate 261 is similar in structure to the first to seventh embodiments.

  Specifically, the substrate 261 may be coupled to the socket 230, and one or more screw holes 261e for coupling with the socket 230 may be formed.

  The substrate 261 may be formed with a through hole 261b into which the protrusion 939 of the intermediate metal plate 930 is inserted.

  In addition, the substrate 261 may be formed with one or more screw holes 261c that are screw-coupled with screws that pass through screw holes 957 formed in the surface contact portion 958.

  In addition, the substrate 261 may be formed with an insertion hole 261a into which the protrusion 119 described above is inserted.

  The insertion hole 261a is configured such that the protruding portion 119 formed in the surface contact portion 958 is inserted, and any structure is possible as long as the protruding portion 119 is inserted.

  In addition, after the protrusion 119 is inserted into the insertion hole 261a, the protrusion 119 is connected to the power connection line 250 and can be used as a connection terminal for supplying power to the LED element 120.

  At this time, the protrusion 119 is inserted into the insertion hole 261a and then soldered to the power connection line 250 to be fixed.

  On the other hand, in the LED lighting device having the above-described structure, when the heat emission is not smooth, the lighting effect of the LED element 120 is reduced, and therefore a fan (not shown) may be further provided to enhance the lighting effect.

  The fan is configured to generate an air flow and cool the LED element 120, and is preferably provided in a direction perpendicular to the plane of the metal plate 110.

  At this time, the metal plate 110, that is, the first metal plate 110-a, the second metal plate 110-b, the heat radiating metal plate 950, and the intermediate metal plate 930 have openings (not shown) for installing the fan. Can be formed.

  The opening is formed for installing a fan, and may have various shapes such as a hole shape or an opening groove shape.

  In addition, the fan may be provided in front of or behind the LED element 120 in the longitudinal direction connecting the front and rear ends of the metal plates 110-a and 110-b, or as shown in FIGS. It can be provided under the element 120.

  On the other hand, in the case of the eighth embodiment of the present invention, an example in which two LED elements 120 are provided is shown. The number and positions of the LED elements 120 can be set variously according to the characteristics of the reflective shade used. it can.

  In addition, among the electrodes of the LED element 120, electrodes that are not coupled to the metal plates 110-a and 110-b are metal plates after the LED element 120 is attached in the manufacturing process of the metal plates 110-a and 110-b described later. 110-a and 110-b are connected to the terminal connecting part 240 by the auxiliary member 960 separated from the auxiliary member 960 and the power supply connecting line (not shown) connected to the auxiliary member 960 or to the terminal connecting part 240 through the substrate 261. .

  Here, as shown in FIGS. 26, 27, and 32, the auxiliary member 960 is used only for electrical connection of the LED elements 120. As described above, the auxiliary member 960 is a protrusion formed on the surface contact portion 958. The power connection line 250 is connected to the unit 119 and is used as a connection terminal for supplying power to the LED element 120.

  In particular, the auxiliary member 960 coupled to the first metal plate is electrically connected to the auxiliary member 960 coupled to the second metal plate by solder 938, as shown in FIGS. Thus, the LED elements 120 respectively provided on the first metal plate and the second metal plate can be coupled in series.

  The auxiliary member 960 is formed with a large number of through holes 968 in order to enhance the heat dissipation effect.

  The LED lighting apparatus according to the eighth embodiment having the above-described configuration minimizes the distance between the metal plate 110 provided with the LED element 120, that is, the first metal plate and the second metal plate, and the LED element 120. Can be positioned at the optimum position of the pre-designed reflective shade.

  In particular, the LED lighting apparatus according to the eighth embodiment is similar to the seventh embodiment in that an automobile headlamp is used instead of a light bulb having two filaments so that a single light bulb enables a high beam and a low beam. Can be provided.

  That is, the LED lighting device according to the eighth embodiment is installed in an automobile headlight instead of a light bulb having two filaments so that a high light beam and a low beam can be produced by a single light bulb. One of the second LED elements 120b may be positioned at a filament corresponding to a high beam, and the other one may be positioned at a filament corresponding to a low beam. At this time, each of the first metal plate 110-a and the second metal plate 110-b is provided with two LED elements, that is, the first LED element 120a and the second LED element 120b.

  The first LED element 120a and the second LED element 120b are provided in each of the first LED element 120a and the second LED element 120b so that the distance to the socket part 230 is different so as to be located at a position corresponding to the two light sources. It is preferred that

  That is, one of the first LED element 120a and the second LED element 120b may be located at a filament position corresponding to a high beam, and the other one may be located at a filament position corresponding to a low beam.

  In addition, a vehicle headlamp having a structure capable of generating a high beam and a low beam by one LED lighting device includes light blocking portions 975 and 976 having an appropriate structure so that the low beam and the high beam can be generated by one LED lighting device. Can do.

  The light blocking portions 975 and 976 have the same structure as described above, and are directly below the LED element 120b where light is blocked in order to prevent the light emitted from the LED element 120b from going downward. Various configurations are possible.

  In particular, the light blocking portions 975 and 976 are preferably further formed with vertically extending vertical extensions 975a and 976b in order to prevent light from being exposed to the side of the LED element 120b.

  The vertical extension portions 975a and 976b are configured to extend upward from the light blocking portions 975 and 976 provided directly below the LED element 120b. Various configurations are possible, such as being formed integrally with each other.

  In particular, the vertical extensions 975a and 976b extend upward between the first LED element 120a and the second LED element 120b.

  On the other hand, in the case of a vehicle headlamp, the right side is designed to be formed further downward when the light emitting area of a halogen bulb as a light source is viewed from the front of the vehicle together with the structure of the reflective shade.

  On the other hand, when the LED lighting device according to the present invention is provided in a headlight of an automobile, in order to reflect the characteristics as described above, as shown in FIGS. When viewed from the front of the automobile, the metal plate 110 coupled to the substrate 261, that is, the first metal plate 110-a, the second metal plate 110-b, and the intermediate metal plate 930 have a constant clockwise surface. It is preferably provided to have an angle θ.

  In other words, when the LED element 120 provided on the metal plate 110 is mounted on the automobile and viewed from the front of the automobile, the LED element 120 is the metal plate 110, that is, the first metal plate 110-a and the first metal plate 110-a. It is preferable that the installation angle with respect to the surface of the two metal plates 110-b is set to have a constant angle θ in the clockwise direction from the horizontal line.

  On the other hand, when viewed from the front of the automobile when mounted on the automobile, the surface of the metal plate 110 coupled to the substrate 261 is clockwise and the constant angle θ is preferably 5 ° to 10 °, preferably 8 °. More preferred.

  Here, the substrate 261 is coupled to the socket 230, and the surface of the metal plate 110, particularly, the metal plate 110 into which the through hole 261b into which the intermediate metal plate 930 is inserted is coupled to the substrate 261 is clockwise. It is preferably formed in a slot shape rotated at a constant angle θ, preferably 5 ° to 10 °, more preferably 8 °.

  In addition, a pair of screw holes 261e formed on the substrate 261 for coupling with the socket 230 are formed in the horizontal direction.

  The insertion hole 261a and the screw hole 261c related to the installation state of the metal plate 110 are similar to the through-hole 261b in that the metal plate 110 coupled to the substrate 261 has a surface at a constant angle θ in the clockwise direction, preferably Is preferably formed in a slot shape rotated by 5 ° to 10 °, more preferably 8 °.

  Meanwhile, the metal plate used in the LED lighting apparatus according to the first to eighth embodiments of the present invention can be manufactured by the following method.

  Hereinafter, the LED lighting device manufacturing method according to the present invention will be described by way of example of the LED lighting device according to the sixth embodiment.

  As shown in FIG. 36a, a metal sheet 0 made of copper or a copper alloy material is prepared.

  Then, as shown in FIG. 36b, the edge portions of the metal plates 110, 910, and 930 are left on the top and bottom surfaces so that the metal plates 110, 910, and 930 used in the metal sheet 0 can be formed. An anti-etching film is formed.

  At this time, in consideration of mass production, an etching prevention film is formed on the metal sheet 0 so that one type of a plurality of metal plates or a plurality of types of metal plates 110, 910, and 930 can be formed. .

  At this time, the etching prevention film prevents the metal plates 110, 910, and 930 from being completely separated by the etching in the subsequent etching process by forming the plurality of bridges 961.

  Here, the metal plates 110, 910, 930 may be individually separated during the subsequent process.

  Further, the auxiliary member 960 that corresponds to the portion corresponding to the non-contact electrode that is not coupled to the metal plate in the electrode of the LED element 120 coupled to the metal plate 110, 910, 930 is separated from the metal plate. The corresponding part is also preferably coated with an anti-etching film.

  When the auxiliary member 960 is formed together with the metal plate 110 on the metal sheet, after the soldering member is attached in the soldering member attaching process described later, the auxiliary member 960 is connected to the metal plate in the LED element through the LED element coupling process. Coupling, ie non-contact electrodes that are not energized, can be coupled.

    Here, the auxiliary member 960 is not completely separated by the etching process, and remains connected to the metal plate 110 by one or more bridges 961.

  As described above, if the non-contact electrode is coupled to the auxiliary member 960 by a soldering member, the metal plate may be separated and then connected to the terminal of the other LED element described above during assembly for manufacturing the LED lighting device. There is an advantage that the power connection line 250 for connection to the power supply line can be easily connected (see FIGS. 5 and 18).

  After forming an etching prevention film on the top and bottom surfaces of the metal sheet 0, the metal plates 110, 910, 910, 930 is formed.

  The metal sheet 0 that has undergone the etching process may be coated with nickel or the like after the protective film is removed. In particular, plating with nickel is most preferable. However, since the heat of the metal plate 110 may be hindered by nickel plating, it may be used without nickel plating.

  The metal plate 110 is preferably black-coated with a material such as a black epoxy paint in order to maximize the heat release effect.

  As shown in FIG. 36c, the metal sheet 0 that has undergone the etching process and the plating process is bonded with solder only at a position where the LED element 120 is bonded, that is, a certain area (area shown in black in FIG. 24). A lane marking may be printed that divides the solder joint area (area shown in black in FIG. 24) as can be done.

  On the other hand, in the metal sheet 0 that has undergone the etching process and the plating process, a soldering member is attached to a position where the LED elements are coupled so that the LED elements 120 can be coupled.

  Here, the attachment method of the soldering member is a method using a laser processing apparatus, an opening is formed only at a position where the LED element 120 is coupled, and a soldering member such as solder is in powder form through the opening as a binder. A soldering member mixture mixed with can be deposited on the metal sheet.

  On the other hand, as shown in FIG. 36d, after the soldering member is attached onto the metal sheet 0, the LED element 120 is coupled. At this time, adhesion of the soldering member and bonding of the LED element 120 are performed in an oven that forms a heated environment so that the LED element 120 can be bonded onto the metal sheet 0 by melting the soldering member. Is preferred.

  In the oven, after the soldering member is attached and the LED element 120 is bonded, the LED element 120 is discharged to the outside of the oven, and the LED element 120 is firmly bonded onto the metal sheet by cooling.

  On the other hand, after the LED element 120 is bonded on the metal sheet 0, the bridge 961 is cut to be separated into individual metal plates 110, 910, and 930 and assembled in the structure as described above.

  At this time, each LED element 120 is assembled using a jig or the like so that it can be positioned at an appropriate position.

  On the other hand, the case where the metal sheet is formed by the etching process when the individual metal plate is formed has been described, but may be performed by various methods such as laser processing and press processing.

  In addition, when forming the individual metal plates 110, 910, and 930 with the metal sheet 0, in order to maximize the release of heat generated from the LED element 120 around the metal plate, holes and cutout grooves are formed on the main surface thereof. Are preferably formed.

  In particular, it is more preferable to form holes, cutout grooves, or the like at the edges of the individual metal plates 110, 910, and 930 formed of the metal sheet 0, particularly at the edges where the LED elements are coupled.

  On the other hand, as described above, the lighting device may be configured by a plurality of metal plates formed on the metal sheet 0 through an etching process. At this time, a structure designed in advance without separately separating the plurality of metal plates. Accordingly, there is an advantage that the LED lighting device of various shapes can be manufactured by folding the connecting portion of each metal plate.

  On the other hand, the LED lighting devices according to the first to eighth embodiments of the present invention have been described with respect to the embodiment used in an automobile, but can also be applied to other lighting devices such as incandescent lamps.

  That is, the LED lighting device according to the first to eighth embodiments of the present invention can be applied to a general lighting device instead of being used in an automobile.

  As shown in FIGS. 5 and 6, the structure in which the LED element is provided on the metal plate is a basic structure, and various modifications can be made as the lighting device.

  As an example, in the LED lighting devices according to the ninth to tenth embodiments of the present invention, as shown in FIGS. 37 to 40, the planar metal plate 610 is bent to form a polyhedral structure, It includes a metal member 600 on which one or more LED elements 120 are provided.

  Here, the polyhedron forming the metal member 600 may have various shapes such as a rectangular parallelepiped with one side opened as shown in FIG. 37 and a hexahedron with one side opened as shown in FIG. .

  The metal member 600 is provided on the main body 2, a planar metal plate 610 is bent to form a polyhedral structure, and one or more LED elements 120 are provided on each surface.

  The metal plate 610 has a structure similar to that of the first embodiment. However, considering that the polyhedron is formed in a bent state, only one of the first electrode 121 and the second electrode 122 of the LED element 120 can conduct heat at a preset position. Contact prevention means for preventing the contact may be formed at a position corresponding to the non-contact electrode that is not thermally conducted to the remaining electrodes.

  And the said contact prevention means is the through-hole 611 formed in the metal plate 610, as FIG. 38-FIG. 44 shows, or may be comprised by the notch part.

  At this time, the non-contact electrode is connected to a terminal of another LED element or a power supply line 650 for connection to a power supply line through a through hole, similarly to the configuration shown in FIG. Can be linked.

  When the through hole 611 serving as the contact preventing unit is formed, the auxiliary member 960 separated from the metal plate 610 is used to be connected to the power connection line 650 as described above. Connection of line 650 can be facilitated.

  In addition, the metal plate 610 is preferably formed with a notch 619 partially loaded at a boundary line that is bent for forming a polyhedron.

  When the notch 619 is bent to form a polyhedron, the notch is maintained as it is and protrudes to the outside, so that when the LED element 120 emits light, the heat dissipation effect can be maximized.

  The metal plate 610 may further include a protrusion 618 inserted into the substrate 651 so that one end can be fixed.

  On the other hand, the LED lighting devices according to the ninth and tenth embodiments of the present invention are provided with a converter circuit (not shown) for converting alternating current to direct current, a stable circuit (not shown) for stabilizing voltage, and the like. Also good.

  In addition, the LED lighting devices according to the ninth and tenth embodiments of the present invention may be provided with the fan 940 described in the sixth embodiment.

  The LED illuminating device according to the present invention having the above-described structure has an advantage that its usage can be remarkably enhanced, such as being used in place of an incandescent lamp in a conventional illuminating device in which an incandescent lamp is used.

  On the other hand, the LED lighting devices according to the ninth and tenth embodiments of the present invention may have various structures and shapes depending on the application of the lighting device.

  Specifically, the LED lighting device according to the ninth embodiment of the present invention may have a structure similar to a conventional incandescent lamp structure.

  In addition, the LED lighting device according to the tenth embodiment of the present invention may have a structure similar to a conventional fluorescent lamp structure.

  Here, when the LED lighting device has a structure similar to a fluorescent lamp structure, an example in which the LED element 120 includes one metal plate 610 provided so as to face downward has been described. The metal plates 610 provided so as to face the side may be provided in pairs.

  On the other hand, the LED lighting devices according to the ninth and tenth embodiments of the present invention include a socket portion 670 for coupling to an external power source to which a substrate 651 to which one end of a metal plate 610 is fixed is coupled. But you can.

  The socket part 670 is connected to an external power supply so as to supply power to the LED element 120, and various structures are possible according to the power supply connection structure.

  In addition, the LED lighting device according to the ninth embodiment of the present invention may further include a cover member 652 made of a transparent or translucent material so as to diffuse the light emitted from the LED element 120 or protect the metal plate 610. Good.

  The cover member 652 may have any configuration as long as it is transparent or semi-transparent so as to diffuse light emitted from the LED element 120 or protect the metal plate 610.

  In addition, the cover member 652 may have a plurality of openings (not shown) in order to increase cooling efficiency.

  The LED lighting device having the above-described configuration has an advantage that the effect of using the conventional lighting facility can be maximized by having a structure that is as close as possible to the conventional incandescent lamp structure.

  That is, the LED lighting device according to the present invention emits light in a form similar to that of an incandescent lamp, thereby making the best use of the reflective shade that is optimized when the incandescent lamp is provided. The lighting effect can be maximized as compared with the use of.

  On the other hand, unlike the ninth and tenth embodiments, the LED lighting device according to the present invention may be supported and provided in the cover member 652 without bending the metal plate 610.

  That is, the LED lighting apparatus according to the eleventh and twelfth embodiments of the present invention includes a socket part 670 for connection to an external power source, and a cover member 652 coupled to the socket part 670 to form an internal space. And a plurality of metal members 610 that are supported by the cover member 652 and provided in the internal space.

  Here, the LED lighting apparatus according to the eleventh and twelfth embodiments of the present invention may have a tubular structure such as a conventional fluorescent lamp structure.

  The socket unit 670 is configured for connection with an external power source, and various configurations are possible.

  The cover member 652 is made of a transparent or translucent material so as to diffuse light emitted from the LED element 120 or protect the metal plate 610, and various configurations are possible.

  The cover member 652 can be used as a support member for the metal plate 610 simultaneously with the protection of the metal plate 610.

  Specifically, the cover member 652 may support the metal plate 610 by forming an insertion portion 353 into which a part of the edge of the metal plate 610 is inserted.

  The insertion portion 353 may have any structure as long as a part of the edge of the metal plate 610 is inserted and the metal plate 610 can be supported.

  Meanwhile, the cover member 652 may have various structures depending on the structure of the LED lighting device, and preferably has a tubular structure, and the LED lighting device has a structure similar to the fluorescent lamp structure. Also good.

  At this time, the LED lighting device according to the eleventh embodiment of the present invention has a straight tubular structure, and the example in which the LED element 120 includes one metal plate 610 provided so as to face downward has been described. The metal plate 610 provided so that the element 120 may face downward may be provided in a pair.

  And when the said LED illuminating device has a structure similar to a fluorescent lamp, in addition to a straight tubular shape, the socket part 670 may be provided in both ends.

  The cover member 652 may have any configuration as long as the cover member 652 has a transparent or translucent material so as to diffuse light emitted from the LED element 120 or protect the metal plate 610.

  In addition, the cover member 652 may be formed with a plurality of openings 654 to increase cooling efficiency.

  Unlike the ninth and eleventh embodiments, the metal plate 610 is similar in configuration except that it has a non-bent structure, and thus detailed description thereof is omitted.

  The foregoing is only a description of some of the preferred embodiments that can be implemented by the present invention, and as is well known, the scope of the present invention should not be construed as being limited to the embodiments. Both the technical idea of the present invention described above and the technical idea that brings the root together are included in the scope of the present invention.

Claims (5)

One or more metal plates, and one or more LED elements provided on the surface of the metal plate,
The LED illumination device according to claim 1, wherein only one of the first electrode and the second electrode is coupled to the metal plate. The LED element is
Attached to a printed circuit board coupled to the metal plate;
The LED lighting device of claim 1, wherein the printed circuit board has one of a first electrode and a second electrode coupled to the metal plate.   The LED lighting device according to claim 1, wherein a socket portion for coupling with a structure provided with the LED lighting device is coupled to one end of the metal plate. The metal plate is
4. The LED lighting device according to claim 1, wherein at least a part includes a plurality of metal plates provided such that surfaces on which the LED elements are provided are inclined with respect to each other. 5. . A pair of first metal plates each having a socket part for coupling with a structure provided with the LED lighting device, one end coupled to the socket part, and a first LED element on the opposite side of the surface facing each other; ,
A pair of first metal plates that are parallel to the pair of first metal plates, one end of which is coupled to the socket portion, and a second LED element is provided on the opposite surface of the surfaces facing each other. A second metal plate;
A pair of second metal plates is parallel to the pair of second metal plates, one end is coupled to the socket portion, and a bent surface portion is bent so as to be perpendicular to the second metal plate. One or more third metal plates provided with a third LED element on the folded curved surface portion;
An LED lighting device comprising: a spacing member to which the other ends of the first to third metal plates are coupled so as to maintain a spacing between the first to third metal plates.