KR20150108738A - LED lighting apparatus - Google Patents

Abstract

The present invention relates to an LED lighting apparatus and, more specifically, to an LED lighting apparatus for lighting using LED elements. The LED lighting apparatus includes: one or more metal plates; and one or more LED elements provided on the surface of the metal plates. In the LED elements, one among first and second electrodes is joined to the metal plates.

Description

{LED lighting apparatus}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED lighting apparatus, and more particularly, to an LED lighting apparatus that illuminates an LED using an LED element.

Generally, the lighting apparatus is widely used for illuminating the interior or the exterior of the room, as a means of notifying a traffic light, a warning light, and the like.

As an illumination device, a filament that emits light while being heated to a high temperature when supplied with current is used. Recently, a lighting device using an LED (LED) having low power consumption, excellent brightness, .

However, since the LED has a strong linearity of light, the light diffusing property is low and the side illumination is weak, it is not enough to replace the lighting device using the existing filament at present.

1 and 2 are diagrams showing a conventional lighting apparatus 1 having a bulb type bulb 10 in an automobile. As shown in the figure, the conventional lighting apparatus 1 is a bulb- And has a reflective member 20 optimized for use.

Particularly, the reflecting member 20 is arranged in such a manner that the reflecting surface of the reflecting member 20 has a light emitting portion 11 of the bulb type bulb 10, that is, the position of the filament, for example, Is designed to be optimized in correspondence with the distance (1) from the light source (12).

However, in case of replacing the conventional lighting apparatus 1 having the above structure with the LED lighting apparatus, unlike the conventional bulb type bulb 10 which is irradiated almost in the front direction, due to the optical characteristics of the LED having one- It is impossible to recycle the reflecting member 20 in the conventional lighting apparatus 1 and a separately designed reflecting member is required.

If a conventional lighting fixture having a bulb type bulb is replaced with an LED lighting fixture, there is a problem in that the replacement cost such as redesign of the reflective member is high and serves as an obstacle to the utilization effect and diffusion of the LED lighting fixture.

It is an object of the present invention to provide an LED lighting device which can have a similar lighting effect without any structural change in a conventional lighting fixture.

It is another object of the present invention to provide an LED lighting device capable of replacing an existing bulb-type bulb in a conventional lighting assembly such as a headlight and a fog lamp of an automobile using bulb-type bulbs without any structural change.

It is a further object of the present invention to provide an LED lighting device capable of having a lighting effect similar to a bulb-type bulb without any structural change in a conventional lighting fixture having a reflector optimized for a bulb-type bulb.

It is a further object of the present invention to provide a lighting fixture having a reflector optimized by two or more light sources in a bulb-type bulb, in particular a light source positioned by a bulb-type bulb in an automotive lighting fixture, So that it is possible to have a similar lighting effect to a bulb-type bulb without any other structural change.

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object of the present invention. And one or more LED elements mounted on a surface of the metal plate, wherein the LED element is coupled to the metal plate and the metal plate, wherein either the first electrode or the second electrode is coupled to the metal plate .

The LED lighting apparatus according to the present invention has an advantage that a structure can be easily and effectively radiated by providing a structure in which a heat generated from an LED element is transferred to a metal plate by radiating heat by providing an LED element on one or more metal plates .

Further, the LED illumination device according to the present invention comprises a pair of metal plates each having an LED element coupled to an outer surface, which is a surface opposite to a surface facing each other, so that the bulb type bulb is used There is an advantage that the utilization of the LED illumination device can be maximized by replacing the bulb type bulb in the conventional lighting device.

Particularly, a conventional lighting facility using a bulb type bulb is characterized by having a reflector, wherein the reflector is optimized in correspondence with the bulb-type bulb, in particular, the light-emitting portion of the bulb-type bulb. The position of the bar-shaped element formed by arranging the LED element on the metal plate is positioned at a position corresponding to the light-emitting portion of the bulb-type bulb, so that the bulb-type bulb has a light irradiation effect similar to that of the bulb- There is an advantage that the utilization of the LED illumination device can be maximized by replacing the bulb type bulb in the lighting device.

As a specific example, the LED illumination device according to the present invention is advantageous in that it is different when it is used in a headlight for a car, a fog lamp, a turn signal lamp, and the like.

First, the LED lighting device has different lighting characteristics from the bulb type bulb. When the LED lighting device is used as a lighting device requiring special lighting effects such as a headlight for a car, a fog lamp, and a turn signal lamp, There is a problem that the design of the reflector must be changed.

In the conventional lighting apparatus in which the bulb type bulb is used by having a light irradiation effect similar to that of the bulb type bulb by locating the LED lighting apparatus according to the present invention at a position corresponding to the light emitting portion of the bulb type bulb, It is possible to maximize the utilization of the LED illumination device.

In addition, in a conventional lighting apparatus in which a plurality of filaments having different positions of light sources, for example, positions of the light sources are provided, and one bulb-type bulb can simultaneously implement the upward and downward lights, There is an advantage that the utilization of the LED illumination device can be maximized by replacing the bulb type bulb in the conventional lighting device in which the bulb type bulb is used by positioning the LED device.

Fig. 1 is a conceptual diagram showing a conventional lighting apparatus having a bulb-type bulb, specifically a headlamp for a vehicle.
Fig. 2 is a side view showing an example of a bulb-type bulb used in the automotive headlight of Fig. 1. Fig.
3A is a perspective view showing an LED illumination device according to a first embodiment of the present invention.
3B is an exploded view showing a part of the LED illumination device of FIG.
Fig. 4A is a side view of the LED illumination device of Fig. 3A. Fig.
4B is a plan view of the LED illumination device of Fig. 3A.
5 is a cross-sectional view taken along the line V-V in Fig.
6 is a cross-sectional view in the V-V direction showing the modification of Fig.
7 is a perspective view showing an LED illumination device according to a second embodiment of the present invention.
8 is a plan view of the LED illumination device of Fig.
9 is an exploded view of the LED illumination device of Fig.
Fig. 10A is a plan view showing the first metal plate and the cover metal plate of the LED illumination device of Fig. 7; Fig.
Fig. 10B is a plan view showing the second metal plate and the cover metal plate of the LED illumination device of Fig. 7; Fig.
Fig. 10C is a plan view of an intermediate metal plate in the LED illumination device of Fig. 7;
11 is a perspective view showing an LED illumination device according to a third embodiment of the present invention.
12 is a plan view of the LED illumination device of Fig.
13 is an exploded view of the LED illumination device of Fig.
14A is a plan view showing a first metal plate and a heat-radiating metal plate in the LED illumination device of FIG.
Fig. 14B is a plan view showing the second metal plate and the heat dissipating metal plate in the LED illumination device of Fig. 11;
14C is a plan view of the intermediate metal plate in the LED illumination device of FIG.
15 is a perspective view showing an LED illumination device according to a fourth embodiment of the present invention.
Fig. 16 is a perspective view of the LED illumination device of Fig. 15 as seen from another direction. Fig.
17 is an exploded perspective view of the LED illumination device of Fig.
16A to 16B are side views showing the first metal plate, the second metal plate and the intermediate metal plate of the LED illumination device of Fig. 15, respectively.
19 is a side view of the LED illumination device of Fig.
20 is a plan view of the LED illumination device of Fig.
Fig. 21 is an equivalent circuit diagram of the LED illumination device of Fig. 15. Fig.
22 is a plan view showing a modification of the LED illumination device of the fourth embodiment of the present invention.
23 is a front view of the LED illumination device of Fig.
24 is a plan view showing a substrate of the LED illumination device of Fig.
25A to 25D are plan views showing a part of a manufacturing method of an LED illumination device according to the present invention.

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

As shown in FIGS. 3A to 25D, the LED illumination apparatus according to the present invention includes at least one metal plate 110; And one or more LED elements 120 mounted on the surface of the metal plate 110.

The metal plate 110 has a plate shape so that the LED element 120 can be installed and supported and can be made of any material having high thermal conductivity such as aluminum, aluminum alloy, copper, copper alloy, SUS It is possible.

Particularly, the metal plate 110 is preferably made of copper or a copper alloy in consideration of workability, thermal conductivity, and conductivity.

It is also desirable that the thickness of the metal plate 110 is minimized if possible without structural stiffness and manufacturing limitations.

In particular, the thickness of the metal plate 110 is preferably 0.01 mm to 0.5 mm, more preferably 0.1 mm to 0.4 mm. However, it is needless to say that the thickness of the metal plate 110 is not limited to the above numerical values, and it may be various thicknesses depending on design requirements.

The metal plate 110 may be coated with a material having a high reflectance such as silver in order to enhance the reflection effect of the light emitted from the LED 120 or the like on the surface of the metal plate 110.

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

Further, the surface of the metal plate 110 may be plated with nickel. However, since the heat of the metal plate 110 can be prevented from being released by nickel plating, it can be used without nickel plating.

The metal plate 110 is preferably coated with a black material such as a black epoxy paint to maximize heat dissipation.

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

Also, the metal plate 110 may be attached with wiring for power connection to the LED element 120, or may be printed.

Also, the metal plate 110 may be formed with a circuit pattern.

The metal plate 110 may be connected to a board such as an FPCB on which the LED 120 may be mounted.

In addition, the metal plate 110 may be printed with a synthetic resin material to prevent the solder from escaping to a region other than the solder region in order to manufacture, i.e., bond with the LED device 120, or the like.

The metal plate 110 may have various shapes in consideration of the heat dissipation effect of the LED 120 and the light irradiation effect of the LED 120 when the plurality of LEDs 120 are formed.

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

7 to 10, the metal plate 110 includes a mounting surface portion 112 provided with the LED element 120, a bent surface portion 113 extending from the mounting surface portion 112 in a bent manner, And may include a bending metal plate 110-1.

The bending metal plate 110-1 is composed of a plurality of metal plates 110 and has a bent surface portion 113 coupled to the supporting structure like the socket portion 230 to maximize the light irradiation effect of the LED element 120. [ And a mounting surface portion 112 integrally formed with the mounting surface portion.

The mounting surface 112 is formed such that the normal line of the surface on which the LED element 120 is provided is parallel to the light irradiation direction of the LED element 120 as a portion for determining the light irradiation direction of the LED element 120.

The folded surface portion 113 is integrally formed with the mounting surface portion 112. The bent surface portion 113 is parallel to the adjacent metal plate 110 Various configurations are possible as a combined configuration.

The plurality of metal plates 110 may include a plurality of metal plates 110. The plurality of metal plates 110 may be formed such that at least a part of the plurality of metal plates 110 is parallel to the surfaces on which the LED elements 120 are provided, Or be inclined.

1) The metal plate 110 directly and firmly supports the LED element 120. In the case of the FPCB, the metal plate 110 can not support the LED element 120 itself, and is made of a synthetic resin material having a low thermal conductivity And the heat release effect is remarkably 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, the solder, the copper wiring, the adhesive layer, the insulating layer, (2) the first terminal (121) and the second terminal (122) of the LED element (120) can be made to function as a heat sink, (3) a heat dissipating member for dissipating heat by receiving heat from the LED device 120, and (ii) a light emitting diode (LED) The first terminal 121, the second terminal 122, and the heat slug 124 of the bulb-type light bulb 120. [0044] Was placed at the optimum position on the light-emitting portion (the filament) can increase the utilization effect utilizing the existing reflector.

The LED element 120 is an LED element that emits light by supplying a DC power source. The LED element 120 includes 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, A blue LED device, a red LED device, and a green LED device "may be used.

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

For example, the LED device 120 may include a first electrode 121 and a second electrode 122, which are positive and negative terminals, as shown in FIG.

5, the LED element 120 includes a heat slug 124 for dissipating heat in addition to the first electrode 121 and the second electrode 122, which are positive and negative terminals, May be further included.

The heat slug 124 may be integrally formed with the first electrode 121 and the second electrode 122 in accordance with the structure of the heat slug 124 to emit heat generated from the LED device.

5 is a structure for illustrating the first electrode 121, the second electrode 122 and the heat slug 124 in the LED device 120, which may be different from the structure of the actual LED device Of course it is.

The LED device 120 may be coupled to the metal plate 110 such that only one of the first electrode 121 and the second electrode 122 can be thermally conductive with the metal plate 110 when the metal plate 110 is coupled with the LED device 120. [ .

In addition, when the LED element 120 further includes a heat slug 124, only the heat slug 124 may be coupled to the metal plate 110 so that the heat slug 124 can be thermally conductive 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. 3A to 5.

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

Specifically, the metal plate 110 corresponds to a non-contact electrode in which only one of the first electrode 121 and the second electrode 122 of the LED element 120 is thermally conductive, The contact preventive means 111 for preventing the contact can be formed.

The contact preventing means 111 may be formed as a through hole formed in the metal plate 110 as shown in FIG. 5, or as an incision as shown in FIGS. 7 and 9.

As shown in FIG. 5, the contactless electrode may include a power connection line 250 for connection to a terminal of another LED element or for connection to a power supply line through a through hole or a cut portion (formed in FIGS. 7 and 9 (Not shown).

The power supply connection line 250 may be utilized to maintain a space between the metal plates 110 arranged in parallel by being connected to the LED elements 110 in the first embodiment described later. It will be appreciated that the spacing between the metal plates 110 disposed in parallel may be maintained by the spacing member 280 described later.

When the LED device 120 is connected to the adjacent metal plate 110 instead of the power supply connection line 250, the LED device 120 installed on the adjacent metal plate 110 by the piece of the metal plate 110 of the same material As shown in FIG.

As another example, the contact preventing means 111 may be constituted by an insulating member 111 formed on the metal plate 110, as shown in Fig.

The insulating member may be configured in various forms such as an insulating material coated on the surface of the metal plate 110, an attached insulating tape, or the like as a constitution for electrical insulation between the LED element 120 and the metal plate 110.

5, only the heat slug 124, which 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 to the metal plate 110 The first electrode 121 and the second electrode 122 of the LED device 120 are electrically insulated from the metal plate 110.

5, the LED element 120 may be mounted on a printed circuit board (not shown) coupled to the metal plate 110, instead of being directly coupled to the metal plate 110, One of the first electrode 121 and the second electrode 122 is electrically connected to the metal plate 110 in a manner similar to the case where the LED element 120 is directly coupled to the metal plate 110. [ To the metal plate 110, as desired.

Meanwhile, the LED element 120 may be provided around the reflector to improve the divergence angle and illuminance of the light.

Meanwhile, the LED lighting apparatus according to the present invention has a basic structure of a metal plate 110 having an LED element 120 and an LED element 120 coupled thereto, and a plurality of metal plates 110 are arranged parallel to each other , And a part of them are disposed in an inclined relation with each other. Thus, a lighting apparatus having various lighting effects can be constituted by various combinations of arrangements.

In particular, the metal plate 110 having the LED device 120 and the LED device 120 according to the present invention may have a plurality of basic structures to have the same lighting effect as the bulb type bulb, It is possible to maximize the utilization effect of the LED lighting device by replacing the bulb type bulb with a lighting device such as a headlight, a fog lamp, and a turn signal lamp using a bulb.

Hereinafter, an LED illumination apparatus according to the present invention will be described as being used in a lighting apparatus such as a headlight for a car, a fog lamp, and a turn signal lamp.

3A and 5B, the LED lighting apparatus according to the first embodiment of the present invention has a basic structure of a metal plate 110 having an LED element 120 and an LED element 120 combined with each other, And the metal plate 110 may include a first metal plate and a second metal plate disposed in parallel to each other and provided with at least one LED element 120 on a surface opposite to the surface.

In addition, a socket 230 may be coupled to one end of the pair of metal plates 110 to provide a structure for mounting an LED lighting device, that is, a socket for a vehicle lighting device.

The metal plate 110 may be fixedly coupled to the socket 230 or may be coupled to the socket 230 in various ways.

The socket unit 230 can be configured in various ways according to a structure in which the LED lighting device is to be installed, that is, a structure to be installed as a structure for coupling with a lighting device for an automobile.

For example, the socket unit 230 includes a main body 231 detachably coupled to the structure; A terminal connection portion 240 provided on the main body 231 for electrical connection with a connection terminal (not shown) provided on the structure; And an element power supply unit 260 for electrically connecting the LED element 120 and the terminal connection unit 240.

The main body 231 may be formed of one or more members as a structure for stably bonding the LED illumination device to a structure, and may have various configurations such as an insulating material or a combination of a metal and an insulating material.

The terminal connection part 240 is provided for the electrical connection with a connection terminal (not shown) provided on the main body 231 and may be configured in various ways according to the terminal connection method. In some cases, And may be integrally formed.

The element power supply unit 260 is electrically connected to the LED element 120 and the terminal connection unit 240 and electrically connected to the terminal connection unit 240 and the LED element 120 according to the connection structure with the terminal connection unit 240 and the LED element 120, Various combinations of configurations are possible.

4A and 4B, the device power supply unit 260 includes a substrate (not shown) coupled with the metal plate 110 to support the metal plate 110 and coupled to the terminal connection unit 240 261, and a connection portion 262 for supplying power to the LED element 120.

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

The substrate 261 may have various configurations such as a structure that supports the metal plate 110 and is coupled to the terminal connection unit 240. The substrate 261 may include a plurality of protrusions 119, 261a are formed on the terminal connection portion 240 and a circuit pattern is formed for the connection between the terminal connection portion 240 and the LED element 120, and so forth.

The substrate 261 may form part or all of the main body 231 forming the socket part 230.

The connecting portion 262 is a portion for supplying power to the LED element 120. As shown in Figs. 4A and 4B, the connecting portion 262 may include a solder portion, various structures such as a wire This is possible.

7 to 10, a plurality of terminal portions 265 electrically connected to the terminal connection portion 240 are formed and coupled to the main body 231, A substrate 261 for supporting the metal plate 110 and at least one wire 263 for connecting the LED element 120 and the terminal portion 265. [

Here, the electric wire 263 may be any electrically conductive member such as a copper wire or a wire, in addition to a used wire provided with copper wires in a synthetic resin.

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

On the other hand, when a socket 230 for coupling with a lighting device for automobile is coupled to one end of the pair of metal plates 110, a pair of metal plates 110 may be additionally provided with a gap holding member 280 for maintaining a stable gap between them.

The gap holding member 280 is formed to have a through hole 281 through which the metal plate 110 can be inserted as an insulating member such as a synthetic resin or a PCB to maintain a stable interval between the pair of metal plates 110, So that the metal plate 110 can be fixedly coupled to the pair of metal plates 110 by inserting the metal plate 110.

Meanwhile, the pair of metal plates 110 may be electrically insulated when they are coated with a material such as an epoxy paint or the like, and may be installed to be in contact with each other.

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

More specifically, the LED illumination device according to the first embodiment of the present invention is installed in any one of a headlight, a fog lamp, a turn signal lamp, and a tail lamp of a vehicle in which a bulb type bulb is installed, As shown, the bulb type bulb can be 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 a vehicle.

Specifically, the LED element 120 is arranged at a distance 1 from the socket portion 230 in the metal plate 110 so as to correspond to the distance 1 from the socket portion 12 to the light emitting portion 11 in the bulb type bulb. As shown in FIG.

Meanwhile, when the LED lighting apparatus according to the present invention is installed in any one of a headlight, a fog lamp, a turn signal lamp and a tail lamp of an automobile in which a bulb type bulb is installed, It is necessary to increase the light emitting property or the light emitting property in the front direction.

Particularly, the LED illumination device has a problem that the outermost LED element can not be located at the optimum position of the previously designed reflector.

In the following description of the LED illumination device according to the second embodiment of the present invention, only the configurations different from those of the first embodiment will be described, and the same or similar configurations as those of the first embodiment will be omitted for convenience of explanation.

7 to 10C, in a modification of the first embodiment, the LED illumination device according to the second embodiment of the present invention includes a metal plate 110 (FIG. 7) to which the LED element 120 and the LED element 120 are coupled 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 sides of the first metal plate and the second metal plate.

The LED device according to the second embodiment of the present invention includes a first metal plate and a second metal plate spaced apart from the first metal plate and spaced apart from the second metal plate so as to expose the LED device 120 on the side where the LED device 120 is installed. Of closure metal plates (910).

As shown in FIGS. 10A and 10C, the pair of the cover plate 910 is formed in such a manner that the LED element 120 is exposed from the surface on which the LED element 120 is mounted, So that various configurations are possible.

Particularly, in the pair of cover plate 910, the opening 911 can be formed so that the LED element 120 is exposed from the side where the LED element 120 is installed.

The opening 911 may be formed in the closure metal plate 910 such that the LED element 120 is exposed from the side where the LED element 120 is provided.

Meanwhile, the pair of cover plate 910 is integrally connected to the front and rear ends of the first and second metal plates, so that the cover plate 910 is formed in the LED elements 120 installed on the first and second metal plates, respectively. Heat is released.

At this time, an incision 913 is formed in the vicinity of the boundary between the cover plate 910 and the first metal plate, the cover plate 910 and the second plate, A protrusion 119 may be additionally formed.

Here, the substrate 261 is formed with at least one through hole into which the protrusion 119 can be inserted.

The protrusion 119 is formed naturally when bent along the boundary between the clogging metal plate 910 and the first metal plate, the clogging metal plate 910 and the second metal plate.

On the other hand, the pair of cover plates 910 may have protrusions 914 formed on opposite sides of the first metal plate and the second plate. Here, each of the first metal plate and the second metal plate may have a protrusion 915 for coupling with the gap retaining member 280.

The pair of cover plate 910 is integrally connected to the first and second metal plates 910 and 910 so that the heat generated from the LED elements 120 can be more efficiently discharged to improve the light emission characteristics of the LED elements .

Further, the pair of cover plates 910 may be formed of a metal plate having an end portion of a gap holding portion 971 bent and protruded from the first metal plate and the second metal plate for maintaining a gap with the first metal plate and the second metal plate, The opening 972 may be formed.

On the other hand, it is necessary to prevent the first metal plate and the second metal plate provided with the LED elements 120 from facing each other and receiving the heat generated from the respective LED elements 120 to have a heating effect.

Accordingly, an intermediate metal plate 930, which is installed parallel to the first metal plate and the second metal plate, may be additionally provided between the first metal plate and the second metal plate.

The intermediate metal plate 930 is disposed between the first metal plate and the second metal plate and blocks the transfer of heat to each other. The intermediate metal plate 930 preferably has the same material as the first metal plate and the second metal plate .

Meanwhile, the intermediate metal plate 930 may be formed with a cut-out portion 931 partially corresponding to a portion where the LED element is installed in the first metal plate and the second metal plate.

Also, the intermediate metal plate 930 may be formed with one or more protrusions 939 so as to be inserted and fixed in through holes formed in the substrate 261.

Further, the first metal plate, the second metal plate, the cover metal plate 910 and the intermediate metal plate 930 are coated with a black material such as a black epoxy paint in order to maximize the heat radiation effect desirable.

Particularly, the first metal plate, the second metal plate, the cover metal plate 910 and the intermediate metal plate 930 were coated with a black epoxy coating,

It should be noted that the coating of the surface of the metal plate with black is applied to the first to fourth embodiments.

On the other hand, in the LED illumination device having the above-described structure, when the heat emission is not smooth, the lighting effect of the LED 120 is lowered, and the fan 940 may be additionally installed to enhance the lighting effect.

The fan 940 is preferably installed in a direction perpendicular to the plane of the metal plate 110 in order to generate an air flow to cool the LED 120.

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 have openings 921, 922, and 923 for installing the fan 940, Can be formed.

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.

7 to 9, the fan 940 may be installed in front of or behind the LED 120 in the longitudinal direction connecting the front end and the rear end of the metal plate 110, 120, respectively.

The LED illumination device according to the second embodiment having the above structure minimizes the distance between the metal plate 110 on which the LED 120 is mounted, that is, the first metal plate and the second metal plate, Can be positioned at the optimum position of the pre-designed reflector.

In the following description of the LED illumination device according to the third embodiment of the present invention, only the configurations that are different from those of the first embodiment will be described, and the same or similar configurations as those of the first and second embodiments, Will be omitted for convenience of explanation.

11 to 14C, the LED lighting apparatus according to the third embodiment of the present invention is a modification of the second embodiment, in which the metal plate 110 (FIG. 11) in which the LED element 120 and the LED element 120 are combined 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 sides of the first metal plate and the second metal plate.

In addition, the LED illumination device according to the third embodiment of the present invention includes a pair of first and second metal plates, each of which is formed integrally with the first metal plate and the second metal plate, And a heat dissipating metal plate 950.

14A and 14C, the pair of heat-radiating metal plates 950 are arranged to be spaced apart from the first metal plate and the second metal plate on the side where the LED elements 120 are installed Various configurations are possible.

In particular, the pair of heat dissipating metal plates 950 is preferably formed so as not to interfere with the illumination of the LED elements 120 on the side where the LED elements 120 are provided.

Here, the heat dissipation metal plate 950 is integrally formed with the first metal plate and the second metal plate to which the LED element 120 is coupled, thereby improving the heat dissipation effect. If necessary, the first metal plate and the second metal plate Or a long length is formed.

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 they are generated in the LED elements 120 installed on the first metal plate and the second metal plate, respectively Heat is released.

At this time, an incision 953 is formed in the vicinity of the boundary between the heat-radiating metal plate 950 and the first metal plate, the heat-radiating metal plate 950 and the second metal plate, A protrusion 119 may be additionally formed.

The protrusion 119 is naturally formed when bent at a boundary between the heat-radiating metal plate 950 and the first metal plate, the boundary between the heat-radiating metal plate 950 and the second metal plate.

The protrusion 119 may be inserted into and fixed to a substrate 261 that supports the metal plate 110 and is coupled to the terminal connection portion 240.

On the other hand, only one of the incision 953 and the protrusion 119 may be formed, but may be formed as two pieces as shown in FIGS. 11 to 14C and stably supported and fixed to the substrate 261 or the like.

The pair of heat dissipating metal plates 950 are integrally connected to the first and second metal plates, thereby more efficiently discharging the heat generated from the LED elements 120, thereby improving the light emitting characteristics of the LED elements .

On the other hand, the first metal plate and the second metal plate provided with the LED device 120 face each other, and heat generated from each of the LED devices 120 is transmitted to each other to prevent a heating effect.

Accordingly, an intermediate metal plate 930, which is installed parallel to the first metal plate and the second metal plate, may be additionally provided between the first metal plate and the second metal plate.

The intermediate metal plate 930 is disposed between the first metal plate and the second metal plate and blocks the transfer of heat to each other. The intermediate metal plate 930 preferably has the same material as the first metal plate and the second metal plate .

Meanwhile, the intermediate metal plate 930 may be formed with a cut-out portion 931 partially corresponding to a portion where the LED element is installed in the first metal plate and the second metal plate.

The first metal plate, the second metal plate, the heat dissipating metal plate 950, and the intermediate metal plate 930 are coated with a black material such as a black epoxy paint in order to maximize the heat dissipation effect desirable.

Particularly, 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 coating,

It should be noted that the coating of the surface of the metal plate with black is applied to the first to fourth embodiments.

On the other hand, in the LED illumination device having the above-described structure, when the heat emission is not smooth, the lighting effect of the LED 120 is lowered, and the fan 940 may be additionally installed to enhance the lighting effect.

The fan 940 is preferably installed in a direction perpendicular to the plane of the metal plate 110 in order to generate an air flow to cool the LED 120.

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 have openings 921, 922, and 923 for installing the fan 940, Can be formed.

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.

The fan 940 may be installed in front of or behind the LED 120 in the longitudinal direction connecting the front end and the rear end of the metal plate 110, 120, respectively.

In the meantime, in the third embodiment of the present invention, two LED elements 120 are installed, and the installation number and position of the LED elements 120 can be variously set in accordance with the characteristics of the reflector used.

The electrode of the LED device 120 which is not coupled to the metal plate 110 is connected to the auxiliary member 120 separated from the metal plate 110 after the attachment of the LED device 120 in the process of manufacturing the metal plate 110 (Not shown) connected to the auxiliary connection member 960 and the auxiliary member 960 to the terminal connection portion 240 or to the terminal connection portion 240 via the substrate 261.

The LED illumination device according to the third embodiment having the above structure minimizes the distance between the metal plate 110 on which the LED 120 is mounted, that is, the first metal plate and the second metal plate, Can be positioned at the optimum position of the pre-designed reflector.

Particularly, the LED lighting apparatus according to the third embodiment can be installed in a vehicle headlamp in place of a bulb having two filaments so that an upright bulb and a downward bulb can be made by one bulb.

That is, the LED lighting apparatus according to the third embodiment is installed in a vehicle headlamp in place of a bulb having two filaments so as to be capable of upside and downward by a single bulb, and the first LED element 120a and the second LED element 120b One of the second LED elements 120b may be positioned at the position of the filament corresponding to the upward direction and the other may be positioned at the position of the filament corresponding to the downward direction or the like. At this time, the first metal element 120a and the second element 120b are provided on the first metal plate and the second metal plate, respectively.

The first LED element 120a and the second LED element 120b are installed at the first metal plate and the second metal plate at different distances to the socket 230 so as to be located at positions corresponding to the two light sources. .

That is, any one of the first LED element 120a and the second LED element 120b may be located at the position of the filament corresponding to the upward light and the other may be located at the position of the filament corresponding to the downward direction or the like.

Also, the automotive headlamp having a structure capable of upwards and downwards by a single LED illumination device may include a light blocking member or a reflecting member having a suitable structure to enable a downward light and an upward light by a single LED illumination device.

In the following description of the LED illumination device according to the fourth embodiment of the present invention, only the configurations that are different from those of the first embodiment will be described, and the same or similar configurations as those of the first to third embodiments, Will be omitted for convenience of explanation.

15 to 21, the LED lighting apparatus according to the fourth embodiment of the present invention is a modification of the third embodiment, in which the metal plate 110 (FIG. 15) having the LED element 120 and the LED element 120 coupled thereto A metal plate 110 has a first metal plate 110-a and a second metal plate 110-a disposed parallel to each other and provided with one or more LED elements 120 on opposite surfaces of the first metal plate 110- Plate 110-b.

The LED illumination device according to the fourth embodiment of the present invention is integrally formed with each of the first metal plate 110-a and the second metal plate 110-b on the side where the LED 120 is installed, And a pair of heat-radiating metal plates 950 bent in a U-shape.

The first metal plate 110-a and the second metal plate 110-b have a structure similar to that of the metal plates of the first to third embodiments described above, When the opposite surface is the outer surface, the LED elements 120 may be provided on one or more outer surfaces.

Each of the first metal plate 110-a and the second metal plate 110-b includes an LED 120 to be light-shielded to prevent light emitted from the LED 120 from being directed downward or upward, The light blocking portions 975 and 976 provided on either one of the upper and lower sides of the light blocking portions 975 and 976 may be coupled.

The light shielding portions 975 and 976 are provided on either one of the upper and lower sides of the LED element 120 to be cut off in order to prevent the light emitted from the LED elements 120 from being directed downward or upward 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, It can be bent at an appropriate angle, such as 90 degrees.

In addition to the light shielding effect, the light shielding portions 975 and 976 may be coated or bonded with a material having a high reflectance or a black coating material that is not coated in consideration of the reflection effect.

Also, when the light blocking portions 975 and 976 are integrally formed with the first metal plate 110-a and the second metal plate 110-b, a plurality of through holes may be formed to facilitate bending .

When two or more LED elements 120 are provided on the first metal plate 110-a and the second metal plate 110-b, only the light blocking portions 975 , 976) can be installed.

Particularly, when two LED elements 120 are installed on the first metal plate 110-a and the second metal plate 110-b, one of the LED elements 120, for example, The light blocking portions 975 and 976 may be provided only to the light blocking portion 120b.

18A and 18C, the pair of heat-radiating metal plates 950 are formed on the first metal plate 110-a and the second metal plate 110-b As shown in FIG.

In particular, the pair of heat dissipating metal plates 950 is preferably formed so as not to interfere with the illumination of the LED elements 120 on the side where the LED elements 120 are provided.

The pair of heat radiating metal plates 950 are integrally connected to the front or rear ends of the first metal plate 110-a and the second metal plate 110-b, And the LED device 120 installed on each of the first metal plate 110-b and the second metal plate 110-b.

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

The protrusion 119 is bent at a boundary between the heat-radiating metal plate 950 and the first metal plate 110-a, the boundary between the heat-radiating metal plate 950 and the second metal plate 110-b When formed naturally.

The protrusion 119 may be inserted into and fixed to a substrate 261 that supports the metal plate 110 and is coupled to the terminal connection portion 240.

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

On the other hand, the incision 953 and the protrusion 119 may be formed of one or more, that is, two or more.

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, so that the heat generated from the LED elements 120 can be efficiently Emitting property of the LED device can be enhanced.

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 Fig. 18C, a surface contact portion 958, which is curved at two locations and is in surface contact with the substrate 261, can 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- So that the first metal plate 110-a and the second metal plate 110-b can be stably coupled to the substrate 261.

Particularly, the surface contact portion 958 may be screwed to at least one of the substrate 261 and the socket 260 through a screw hole (not shown) with a screw hole 957 formed therein.

The first metal plate 110-a and the second metal plate 110-b are installed at a predetermined angle with respect to at least one of the substrate 261 and the socket 260 So that the LED device 120 can be positioned at a pre-designed position.

The pair of heat radiating metal plates 950 may be spaced apart from the first metal plate 110-a and the second metal plate 110-b, 110-a and the second metal plate 110-b.

On the other hand, the first metal plate 110-a and the second metal plate 110-b provided with the LED elements 120 face each other and heat generated from each of the LED elements 120 is transmitted to each other, There is a need to prevent this.

Therefore, an intermediate metal plate 110-a is installed between the first metal plate 110-a and the second metal plate 110-b in parallel with the first metal plate 110-a and the second metal plate 110- (930) may be additionally installed.

The intermediate metal plate 930 is installed between the first metal plate 110-a and the second metal plate 110-b and blocks the heat from being transmitted to each other. The first metal plate 110- a and the second metal plate 110-b.

The intermediate metal plate 930 includes a cutout portion 931 that is partially cut corresponding to a portion where the LED 120 is mounted on the first metal plate 110-a and the second metal plate 110- Can be formed.

Specifically, the cut-out portion 931 is formed so as to have the same outline as the outline of at least a portion of the portions of the first metal plate 110-a and the second metal plate 110-b where the LED elements 120 are installed .

The intermediate metal plate 930 may be formed on the inner surface of the first metal plate 110-a and the inner surface of the second metal plate 110-b so that the LED element 120 can be positioned at an optimal position of the pre- .

The intermediate metal plate 930 may be adhered to the inner surface of the first metal plate 110-a and the inner surface of the second metal plate 110-b by a highly heat-resistant adhesive material.

The intermediate metal plate 930 is inserted into the through hole 261b formed in the substrate 261 in a state of tightly coupling with the inner surfaces of the first and second metal plates 110- It is preferable that a projection 939 to be inserted is formed.

The protruding portion 939 is inserted into the through hole 261b formed in the substrate 261 to form an intermediate metal plate 110-a which is in tight contact with the inner surface of the first metal plate 110- (930) can be stably supported on the substrate (261).

The through hole 261b is preferably formed in a slot shape so that a plate-like projection 939 can be inserted.

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 formed of a black epoxy paint It is preferable to coat with black with the same material or the like.

Particularly, the first metal plate 110-a, the second metal plate 110-b, the heat-radiating metal plate 950 and the intermediate metal plate 930 were coated with a black epoxy paint, The effect was much higher.

It should be noted that the coating of the surface of the metal plate with black is applied to the first to fourth embodiments.

The first metal plate 110-a, the second metal plate 110-b, and the intermediate metal plate 930 are connected to the substrate 261 so as to block the forward light from the opposite end, Member 973 can be further combined.

The light shielding member 973 may be variously used, for example, to prevent light from the LED element 120 from directly being directed forward.

The substrate 261 is similar to that of the first to third embodiments.

Specifically, the substrate 261 has a structure that can be coupled to the socket 230, and one or more screw holes 261e for coupling with the socket 230 can be formed.

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

The substrate 261 may be formed with at least one screw hole 261c to be screwed with a screw penetrating the screw hole 957 formed in the surface contact portion 958. [

Further, the substrate 261 may be provided with an insertion hole 261a into which the projection 119 described above is inserted.

The insertion hole 261a may have any structure as long as the protrusion 119 is inserted into the protrusion 119 formed in the surface contact portion 958. [

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

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

On the other hand, in the LED lighting device having the above structure, a fan (not shown) may be additionally provided to enhance the lighting effect as the lighting effect of the LED device 120 is lowered when the heat emission is not smooth.

The fan is preferably installed in a direction perpendicular to the plane of the metal plate 110 in order to generate an air flow to cool the LED device 120.

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, (Not shown) may be formed.

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

The fan may be installed on the front or rear of the LED 120 in the longitudinal direction connecting the front and rear ends of the metal plates 110-a and 110-b, And may be installed on the lower side of the LED device 120.

Meanwhile, in the fourth embodiment of the present invention, two LED elements 120 are installed, and the installation number and position of the LED elements 120 can be variously set in accordance with the characteristics of the reflector used.

The electrode of the LED element 120 which is not coupled to the metal plate 110-a or 110-b is electrically connected to the electrode terminal of the LED element 120 during the manufacturing process of the metal plate 110- (Not shown) connected to the auxiliary member 960 and the auxiliary member 960 which are separated from the metal plates 110-a and 110-b after the attachment, to the terminal connection portion 240 or through the substrate 261 And may be connected to the terminal connection portion 240.

15, 16 and 21, the auxiliary member 960 is utilized only for the electrical connection of the LED element 120, and as described above, the protrusion (not shown) formed on the surface contact portion 958 119 may be connected to a power supply connection line 250 to be used as a connection terminal for supplying power to the LED device 120.

Especially, 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 or the like as shown in FIGS. 15 and 16 The first metal plate and the LED elements 120 provided on the second metal plate may be connected in series.

The auxiliary member 960 may be formed with a plurality of through holes 968 to enhance the heat radiation effect.

The LED illumination device according to the fourth embodiment having the above structure minimizes the interval between the metal plate 110 on which the LED 120 is mounted, that is, the first metal plate and the second metal plate, Can be positioned at the optimum position of the pre-designed reflector.

In particular, the LED lighting apparatus according to the fourth embodiment can be installed in a vehicle headlamp in place of a bulb having two filaments so as to be capable of emitting an upward light and a downward light by a single bulb, similar to the third embodiment.

That is, the LED lighting apparatus according to the fourth embodiment is installed in a vehicle headlamp in place of a bulb having two filaments so as to be capable of upward light and downward light by a single bulb, and the first LED element 120a and the One of the two LED elements 120b may be positioned at the position of the filament corresponding to the upward direction and the other may be positioned at the position of the filament corresponding to the downward direction or the like. At this time, two LED elements, that is, a first LED element 120a and a second LED element 120b are installed on the first metal plate 110-a and the second metal plate 110-b, respectively.

The first LED element 120a and the second LED element 120b may have different distances to the socket 230 so as to be located at positions corresponding to the two light sources, 2 LED elements 120b, respectively.

That is, any one of the first LED element 120a and the second LED element 120b may be located at the position of the filament corresponding to the upward light and the other may be located at the position of the filament corresponding to the downward direction or the like.

In addition, the automotive headlamp having a structure capable of upward light and downward light by a single LED lighting device can include a light blocking portion 975, 976 of a suitable structure to enable downward light and upward light by one LED lighting device have.

The light shielding portions 975 and 976 have the structure as described above and are installed directly below the LED elements 120b to be cut off in order to prevent light emitted from the LED elements 120b from being directed downward. Various configurations are possible.

In particular, the light shielding portions 975 and 976 may further include vertically extending vertical extension portions 975a and 976b to prevent light from being exposed to the sides of the LED element 120b.

The vertical extension portions 975a and 976b may extend upward from the light blocking portions 975 and 976 disposed directly below the LED elements 120b and may be separately provided in an ' 975, and 976, and the like.

In particular, the vertical extension portions 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 headlight of an automobile, the structure of the reflector and the light emitting area of the halogen bulb as a light source are designed so that the right side is formed further downward when viewed from the front of the automobile.

22 to 24, when the LED lighting apparatus according to the present invention is mounted on a headlight of an automobile, in order to reflect the above characteristics, the board 261 The surface of the first metal plate 110-a and the second metal plate 110-b and the intermediate metal plate 930 are rotated clockwise by a predetermined angle? As shown in Fig.

In other words, when the LED device 120 mounted on the metal plate 110 is mounted on the vehicle, when the LED device 120 is viewed from the front of the vehicle, the metal plate 110, that is, the first metal plate 110- And the second metal plate 110-b are installed so as to have a predetermined angle? In a clockwise direction with respect to the horizontal line.

On the other hand, the metal plate 110 coupled to the substrate 261 when viewed from the front of the vehicle in a state of being mounted on a vehicle has a surface angle of 5 to 10 degrees in a clockwise direction, Deg.].

The through hole 261b through which the metal plate 110 and particularly the intermediate metal plate 930 is inserted in the state of being coupled with the socket 260 is inserted into the metal plate 110 ) Is formed in a slot whose surface is rotated clockwise at a certain angle (?), Preferably 5 to 10, more preferably 8.

Further, the screw holes 261e formed in the substrate 261 and coupled with the socket 260 are formed in a pair in a horizontal direction.

The insertion hole 261a and the screw hole 261c of the metal plate 110 are connected to the substrate 261 similar to the through hole 261b in relation to the installation state of the metal plate 110, It is preferable that it is formed as a slot rotated in a clockwise direction by a certain angle (?), Preferably 5 to 10, more preferably 8.

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

Hereinafter, an LED illumination apparatus according to a second embodiment of the present invention will be described with reference to a method of manufacturing an LED illumination apparatus.

As shown in Fig. 25A, a metal sheet (0) made of copper or a copper alloy is prepared.

As shown in FIG. 25B, leaving the edge portions of the shapes of the metal plates 110, 910, and 930 so as to be formed into the shapes of the metal plates 110, 910, and 930 to be used for the metal sheet 0, An etch stopping film is formed on the bottom surface.

At this time, in consideration of mass production, an etch stop layer is formed on the metal sheet 0 so that a plurality of metal plates or a plurality of kinds 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 etching in a subsequent etching process by forming the plurality of bridges 961.

Where the metal plates 110, 910, 930 can be separated individually during subsequent processing.

And corresponds to a portion of the electrode of the LED device 120 coupled to the metal plates 110, 910, and 930 corresponding to the non-contact electrode that is not coupled to the metal plate, while the auxiliary member 960 is separated from the metal plate Is also preferably coated with an etch stopping film.

When the auxiliary member 960 is formed on the metal sheet together with the metal plate 110, a soldering member is attached in a soldering member attaching process, which will be described later, and is coupled with a metal plate of the LED device, Non-contact electrodes that are not connected to each other can be coupled.

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

When the noncontact electrode is coupled to the auxiliary member 960 by the soldering member as described above, for the manufacture of the LED lighting device after the separation of the metal plate, a power source for connection to the terminals of the other LED elements, There is an advantage that connection of the connection line 250 is easy (see Figs. 5 and 7)

An etch stop layer is formed on the upper and lower surfaces of the metal sheet 0, and the metal plate 110, 910, and 930 is formed by etching the portion where the etch stop layer is not formed by immersing the etch stop layer in an etchant such as acid.

The metal sheet (O) subjected to the etching process may be coated with silver or the like after removal of the protective film. Most preferably plated with nickel. However, since the heat of the metal plate 110 can be prevented from being released by nickel plating, it can be used without nickel plating.

The metal plate 110 is preferably coated with a black material such as a black epoxy paint to maximize heat dissipation.

The metal sheet 0 subjected to the etching process and the plating process is soldered only to a position where the LED element 120 is to be coupled, that is, a certain region (area indicated by black in FIG. 13), as shown in FIG. 25C A region for dividing the solder bonding region (region indicated by black in Fig. 13) can be printed.

On the other hand, in the metal sheet (O) subjected to the etching process and the plating process, a soldering member is attached at a position where the LED element is to be coupled so that the LED element 120 can be coupled.

Here, the method of attaching the soldering member includes a method using a laser processing apparatus, a method in which an opening is formed only at a position where the LED element 120 is to be coupled, and a soldering member mixture such as solder, Can be attached to the sheet.

On the other hand, as shown in Fig. 25D, after the soldering member is attached on the metal sheet 0, the LED element 120 is engaged. At this time, it is preferable that the attachment of the soldering member and the coupling of the LED element 120 are performed in an oven which forms a heated environment so that the LED element 120 can be coupled onto the metal sheet 0 by melting the soldering member.

Also, after the attachment of the soldering member and the coupling of the LED element 120 are performed in the oven, the LED element 120 is discharged out of the oven and is tightly coupled to the metal sheet by cooling.

On the other hand, after the LED element 120 is coupled to the metal sheet 0, the bridge 961 is cut to separate the metal plates 110, 910, and 930 and assembled 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.

In the meantime, although only the case of the etching process in forming the individual metal plates in the metal sheet has been described, it goes without saying that the present invention can be accomplished by various methods such as laser processing and press processing.

In order to maximize heat release from the LED device 120 in the periphery of the metal plate when forming the individual metal plates 110, 910, and 930 in the metal sheet 0, holes, cutting grooves, desirable.

It is more preferable to form the edges of the individual metal plates 110, 910, 930 formed in the metal sheet 0, in particular, holes, cut grooves or the like at the edges of the portions where the LED elements are combined.

Meanwhile, as described above, the illumination device may be constituted by a plurality of metal plates formed on the metal sheet 0 through an etching process. In this case, the plurality of metal plates may be separated, There is an advantage in that it is possible to manufacture an LED lighting device of various shapes by bending the connecting portions of the plates.

Meanwhile, the LED illumination device according to the first to fourth embodiments of the present invention has been described with respect to an automobile, but it is also applicable to other illumination devices such as an incandescent lamp.

That is, the LED illumination device according to the first and second embodiments of the present invention may be used in general illumination devices instead of in automobiles.

Also, as shown in FIGS. 5 and 6, the structure in which the LED device is mounted on the metal plate has a basic structure, and can be variously modified as an illumination device.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

110: metal plate 110-1: bent metal plate
120, 120a, 120b, and 120c:
110-5: first metal plate 110-6: second metal plate
110-7: Third metal plate

Claims (5)

At least one metal plate; And one or more LED elements provided on a surface of the metal plate,
Wherein only one of the first electrode and the second electrode is coupled to the metal plate and the metal plate. The method according to claim 1,
Wherein the LED element is mounted on a printed circuit board coupled to the metal plate,
Wherein one of the first electrode and the second electrode of the printed circuit board is coupled to the metal plate and the metal plate. The method according to claim 1,
And a socket portion for coupling with a structure to which an LED lighting device is to be mounted is coupled to one end of the metal plate. The method according to any one of claims 1 to 3,
Wherein the metal plate includes a plurality of metal plates, at least a portion of the metal plate being arranged such that the surfaces on which the LED elements are mounted are tilted with respect to each other. A socket portion for coupling with the structure to which the LED illumination device is to be installed;
A pair of first metal plates, one end of which is coupled to the socket portion, and a first LED element is mounted on a surface opposite to the other surface, respectively;
And a pair of first metal plates which are parallel to the pair of first metal plates and whose one ends are coupled to the socket portions and whose second LED elements are provided on opposite surfaces of the surfaces, Second metal plates;
A pair of second metal plates disposed between the pair of second metal plates and having a bent surface portion that is parallel to the pair of second metal plates and has one end coupled to the socket portion and bent perpendicularly to the second metal plate, At least one third metal plate provided with a third LED element;
And an interval holding member to which the other ends of the first through third metal plates are coupled to maintain the interval between the first through third metal plates.

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