WO2015178625A1

WO2015178625A1 - Led lighting apparatus having electromagnetic wave shielding circuit applied thereto

Info

Publication number: WO2015178625A1
Application number: PCT/KR2015/004840
Authority: WO
Inventors: 김진형; 이병선
Original assignee: 주식회사 디에스피
Priority date: 2014-05-19
Filing date: 2015-05-14
Publication date: 2015-11-26
Also published as: KR101496821B1

Abstract

The present invention relates to an LED lighting apparatus having an electromagnetic wave shielding circuit applied thereto and, more specifically, to an LED lighting apparatus in which an aluminum radiator panel collects electromagnetic waves, converts the electromagnetic waves to a surface current, and discharges the surface current through grounding. Applying the LED lighting apparatus makes it possible to efficiently shield an electromagnetic wave occurring in an LED light, a converter, or other parts.

Description

LED luminaire with electromagnetic wave blocking circuit

The present invention relates to an LED lighting device to which an electromagnetic wave shielding circuit is applied, and more particularly, to an LED lighting device in which an aluminum heat sink collects electromagnetic waves, converts them into surface currents, and discharges them through ground.

In general, a light emitting diode (LED) is a device in which electrons and holes meet and emit light at a PN junction by applying an electric current, and are generally manufactured in a package structure in which an LED chip is mounted. It is called 'LED package'. The LED package as described above is generally mounted on a printed circuit board (hereinafter, referred to as a PCB) and configured to emit light by receiving a current from an electrode formed on the printed circuit board. In the LED package, heat generated from the LED chip directly affects the light emitting performance and the lifetime of the LED package. The reason is that heat generated in an LED chip causes dislocations and mismatches in the crystal structure of the LED chip when the LED chip stays in the LED chip for a long time.

Accordingly, in the related art, techniques for promoting the emission of heat generated from the LED chip have been proposed. Among them, instead of mounting the LED chip on the lead frame, a heat sink slug made of a metal material having excellent thermal conductivity is inserted into the package body, and the LED chip is mounted on the heat slug. LED package. Such a conventional LED package is arranged so that the heat dissipation slug is in contact with the PCB, the heat of the LED chip is transferred to the PCB via the heat dissipation slug. In a conventional LED heat dissipation device, an LED package is arranged on a metal PCB, and a heat sink is installed under the metal PCB.

Metal aluminum is currently used as a heat radiating member for LED lighting housings. Since the thermal emissivity is extremely small, it is used by giving heat emissivity by processing into anodizing, painting, or fin shape. Therefore, a problem of deterioration in productivity and high cost has been a problem, and there is an increasing demand for replacement from metallic aluminum to an injection molded product using a thermoplastic resin having excellent productivity. However, in contrast to metallic aluminum, thermoplastic resins are inferior in heat dissipation because of their extremely low thermal conductivity. Therefore, the thermoplastic resins cannot be used without imparting thermal conductivity to the heat dissipation member for the LED lighting housing.

As a method of providing thermal conductivity to a thermoplastic resin, the method of mix | blending a high thermal conductivity filler is proposed. However, in addition to heat dissipation, the LED lighting housing requires flame retardancy, insulation, and good molding processability, and since there is no thermoplastic resin that satisfies all of them, resinization of the LED lighting housing has not yet been achieved. Moreover, in recent years, the weight reduction by resinization and the beautiful white appearance are calculated | required.

Recently, LED devices have been in the spotlight as light sources of various lighting devices. The LED element is very small compared to the conventional illumination light source, and has very excellent characteristics such as low power consumption, long life, and fast reaction speed. In addition, it does not emit harmful waves such as ultraviolet rays and is environmentally friendly since it does not use mercury and other discharge gases. However, the lighting device using the LED element has an electronic circuit built in the power module, the electromagnetic waves of high frequency, high power is emitted to the outside, which may adversely affect the user's body. Specifically, when the human body is exposed to electromagnetic waves, it may result in dermatitis, headache, chronic fatigue, premature birth and birth defects. Therefore, there is a need for a device that effectively blocks electromagnetic waves and a blocking technology.

Accordingly, the present invention has been made to solve the above problems, in the LED lighting apparatus to which the electromagnetic wave blocking circuit is applied, a plurality of LED lighting, a flexible circuit board on which the plurality of LED lighting is seated, the flexible flexible LED An aluminum heat sink installed over the entire back surface of the circuit board, an electromagnetic wave blocking circuit module connected to the aluminum heat sink, a converter for converting between AC and DC, a circuit board on which circuit components are installed, a power supply unit for supplying power, and each component Comprising a plurality of conductors electrically connected, the aluminum heat sink is an antenna that collects electromagnetic waves, and provides an LED lighting fixture applying an electromagnetic wave blocking circuit that converts the collected electromagnetic waves into a surface current to discharge through the ground.

In addition, the present invention is a method of electromagnetic shielding of the LED lighting fixture, when the aluminum heat sink first absorbs electromagnetic waves, the surface current is generated on the surface of the aluminum heat sink by the absorbed electromagnetic waves, the surface current of the alternating current in the electromagnetic wave shield circuit module After the conversion to the DC current, the converted DC current is discharged through the ground to provide an electromagnetic shielding method of the LED lighting fixture that can block the electromagnetic waves.

By applying the LED lighting device and the electromagnetic wave shielding method to which the electromagnetic wave shielding circuit of the present invention is applied, it is possible to effectively block electromagnetic waves generated from the LED lighting, the converter, or other components.

Secondly, the aluminum heat sink of the present invention not only functions to conduct and diffuse heat, but also functions as an antenna for collecting electromagnetic waves, thereby eliminating the need for additional means for collecting and absorbing electromagnetic waves. , Space efficient.

Thirdly, the aluminum heat sink of the present invention includes a guide portion for fixing the flexible circuit board, an electromagnetic shielding circuit module, a circuit board, and a storage space for arranging various conductors, thereby securing stability in fixing the LED lighting, and space efficiency. Can increase.

1 is a block diagram showing the basic components of the LED lighting fixture.

2 is a circuit diagram of an embodiment of an electromagnetic wave blocking circuit module of the present invention.

Figure 3 is a flow chart of the electromagnetic wave blocking method of the LED lighting fixture of the present invention.

4 is an exemplary view of manufacturing the electromagnetic wave blocking circuit module of the present invention integrally with a circuit board.

FIG. 5 is an exemplary view of fixing a circuit diagram and a spring to a rear surface of a flexible circuit board to which an LED bulb lamp is fixed as another embodiment of the present invention.

The present invention relates to an LED (Light Emitting Diode) luminaire to which an electromagnetic wave shielding circuit is applied, and more particularly, to an LED luminaire that an aluminum heat sink collects electromagnetic waves, converts them into surface current, and sends them to the outside through ground. It is about. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the basic components of the LED lighting fixture, LED lighting 10, a flexible circuit board 20 on which the plurality of LED lighting 10 is mounted, a converter for converting between alternating current and direct current, An aluminum heat sink 30 for conducting and diffusing heat generated by the LED lighting 10 and the converter 50, an electromagnetic wave blocking circuit module 40 connected to the aluminum heat sink 30, and a circuit board on which circuit components are installed ( 60) and a power supply unit 70 for supplying power, and shows electrical connection relations between the components connected to the plurality of conductive wires 80 and the like. The luminaire may be any one of an LED fluorescent lamp, an LED bulb (bulb), a downlight factory lamp, a flat panel lamp (panel lamp) or a spotlight, but is not limited thereto.

The aluminum heat sink 30 of the present invention functions as an antenna for collecting electromagnetic waves in addition to functioning as a heat sink, and the electromagnetic waves collected by the aluminum heat sink 30 are in the form of an alternating current by free electron vibration of an aluminum surface as a conductor. It is converted into surface current, which flows to the electromagnetic wave shield circuit module 40. In this case, the aluminum heat sink 30 includes a guide part 31 for fixing the flexible circuit board 20 on which the plurality of LED lights 10 are seated, the electromagnetic wave blocking circuit module 40, and a circuit board on which the circuit parts are installed. It is preferable that the structure has a storage space (not shown) for accommodating the 60 and the conductive wire 80. In addition, the aluminum heat sink 30 may be applied in various forms, including concave and convex shapes including concave and convex portions in order to increase the surface area and increase conversion efficiency.

The aluminum heat sink 30 of the present invention is an aluminum heat sink 30 installed over the entire back surface of the flexible circuit board 20, and collects electromagnetic waves generated from the LED light 10 and converts them into surface current, or the converter. An aluminum heat dissipation plate 30 provided in the front portion of the unit 50 collects electromagnetic waves generated from the converter 50 and converts them into surface current. The collected electromagnetic waves are converted into surface currents, which are alternating currents, and flowed to the electromagnetic wave blocking circuit module 40. In addition to this, it is also possible to surround the front part of the LED lighting 10 and have a translucent lighting cover.

The alternating current is a surface current generated by electromagnetic waves touching a conductive object, and the surface current may flow along the surface of the conductive object. For example, the alternating current is a current in which electromagnetic waves generated from various electronic devices are converted into surface current and flows to the ground, or the alternating current is converted into surface current in electronic devices inside and outside the building, and flows to the ground of the building. It can be a current.

In addition, the present invention rectifies the surface current, which is the alternating current, including the electromagnetic wave blocking circuit module to convert the direct current into a direct current. 2 illustrates an embodiment of the electromagnetic wave blocking circuit module 40. The input unit 41 into which the AC current converted from the surface of the aluminum heat sink 30 is input, and the AC current input to the input unit 41 is input. The rectifier 42 is converted into a DC current, an input terminal 43 for receiving a voltage input from the outside, and a ground providing unit 44 for generating ground with the voltage received from the input terminal 43. This limits the inrush current of the NTC, limits the surge by using a varistor, and limits the voltage of the input current by using Ohm's law, and adjusts the input voltage to almost zero in the rectifier circuit. In order to smoothly discharge the surface current of the electromagnetic wave through the ground through the mutual relationship, of course, it is not limited to the circuit diagram shown in FIG.

The converter 50 may be a converter built-in type installed in the storage space of the aluminum heat sink 30 or a converter external type installed outside the aluminum heat sink 30. The data obtained by repeatedly measuring a total of five times by installing the electromagnetic wave blocking circuit module (device) in the converter external converter and the converter internal converter are shown in Table 1 below.

Table 1

	Electromagnetic intensity (V / M): 1 time	Electromagnetic strength (V / M): 2 times	Electromagnetic intensity (V / M): 3 times	Electromagnetic intensity (V / M): 4 times	Electromagnetic intensity (V / M): 5 times
Device not applied	More than 1000	More than 1000	More than 1000	More than 1000	More than 1000
External device application	30	50	20	60	30
Internal device application	0	10	0	7	10

As a result of the implementation data, the difference between not applying the electromagnetic wave shielding circuit module and applying the converter 50 and the electromagnetic wave shielding circuit module 40 to the outside was reduced to a maximum of 2%. 50) and when the electromagnetic wave shield circuit module 40 is applied inside, it is possible to completely block the electromagnetic waves.

3 is a flowchart of a method for blocking electromagnetic waves of the LED lighting device of the present invention. First, when the aluminum heat sink 30 absorbs electromagnetic waves, surface current is generated on the surface of the aluminum heat sink 30 by the absorbed electromagnetic waves. After the phosphorus surface current is converted into a direct current in the rectifier 42 of the electromagnetic wave shield circuit module 40, the converted direct current is discharged through the ground, thereby blocking electromagnetic waves. In this case, the ground may be at least one selected from an outlet ground, a neutral ground, a virtual ground, or a ground rod of a building.

4 is an exemplary embodiment of the present invention, in which an electromagnetic wave blocking circuit module 40 of the present invention is integrally formed with an LED fluorescent lamp with a circuit board 60, and the input unit 41 shown in FIG. It is a way to protrude, and when the sliding fixed to the aluminum heat sink 30, it is in a form that can be immediately contacted. FIG. 5 is an exemplary embodiment of the present invention, in which a circuit diagram and a spring are fixed to a rear surface of a flexible circuit board on which an LED bulb (bulb) lamp is fixed.

Although the present invention has been described with reference to the accompanying drawings, it is merely one example of various embodiments including the gist of the present invention, which can be easily implemented by those skilled in the art. It is clear that the present invention is not limited to the above-described embodiment only. Therefore, the protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent to the change, substitution, substitution, etc. within the scope not departing from the gist of the present invention shall be the right of the present invention. It will be included in the scope. In addition, some of the components of the drawings are intended to more clearly describe the configuration, and it is clear that the exaggerated or reduced size is provided.

Claims

In the LED lighting device to which the electromagnetic wave blocking circuit is applied,

LED lighting;

A flexible circuit board on which the plurality of LED lights are mounted;

An aluminum heat sink installed over the entire back surface of the flexible circuit board on which the LED lighting is mounted;

An electromagnetic wave blocking circuit module connected to the aluminum heat sink;

A converter for converting between alternating current and direct current;

A circuit board on which circuit components are installed;

A power supply unit supplying power; And

Conducting wires electrically connecting each component;

It is configured to include,

The aluminum heat sink is an LED lighting fixture to which the electromagnetic wave blocking circuit, characterized in that the antenna for collecting electromagnetic waves.
The method of claim 1,

The aluminum heat sink,

A guide part fixing the flexible circuit board on which the plurality of LED lights are mounted; And

A receiving space accommodating the electromagnetic wave blocking module, the circuit board on which the circuit parts are installed, and the conductive wire;

LED lighting device to which the electromagnetic wave blocking circuit comprising a.
The method of claim 1,

The aluminum heat sink is installed over the entire back surface of the flexible circuit board, LED luminaires to which the electromagnetic shielding circuit is applied, characterized in that to collect the electromagnetic waves generated from the LED illumination and converts to a surface current.
The method of claim 1,

The aluminum heat sink is installed on the front of the converter, LED lighting fixtures to which the electromagnetic wave blocking circuit, characterized in that to collect the electromagnetic waves generated from the converter and convert to a surface current.
The method of claim 1,

The aluminum heat sink is an LED luminaire applying an electromagnetic wave shield circuit, characterized in that the electromagnetic wave is converted into an alternating current surface current and sent to the input of the electromagnetic wave blocking module.
The method of claim 1,

The aluminum heat sink is an LED lighting device to which the electromagnetic wave blocking circuit, characterized in that to conduct and diffuse the heat generated by the LED lighting or the converter.
The method of claim 1,

The aluminum heat sink is an LED lighting device to which the electromagnetic wave blocking circuit, characterized in that the concave-convex shape including a concave portion and a convex portion.
The method of claim 1,

The electromagnetic wave blocking circuit module,

An input unit to which an AC current converted from the surface of the aluminum heat sink is input;

A rectifier for converting an AC current input to the input unit into a DC current;

An input terminal for receiving a voltage input from the outside; And

A ground providing unit generating ground with a voltage received from the input terminal;

LED lighting device applying a electromagnetic wave blocking circuit comprising a.
The method of claim 2,

The converter is an LED lighting device to which the electromagnetic shielding circuit, characterized in that installed in the storage space of the aluminum heat sink.
The method of claim 2,

The converter is an LED luminaire to which the electromagnetic wave shield circuit is installed outside the aluminum heat sink.
The method of claim 1,

The LED lighting device is an LED lighting device to which the electromagnetic wave shield circuit is applied, characterized in that at least any one selected from LED fluorescent lamp, LED bulb (bulb), downlight factory light, flat panel (panel light) or spotlight.
In the electromagnetic shielding method of the LED lighting device of any one of claims 1 to 11,

The aluminum heat sink absorbs electromagnetic waves;

Generating surface current on the surface of the aluminum heat sink by electromagnetic waves;

Converting the surface current, which is the alternating current, into a direct current at a rectifier of the electromagnetic wave shielding circuit module; And

Discharging the converted direct current through ground;

Electromagnetic wave blocking method of the LED lighting device, characterized in that it comprises a.
The method of claim 12,

Wherein the ground is at least one selected from the outlet ground, neutral ground, virtual ground, or ground rod of the building electromagnetic shielding method of the LED lighting fixture.