KR200451488Y1 - The led lighting - Google Patents

Abstract

The present invention is difficult to mass-produce the LED incandescent bulb is composed of a light guide plate and an acryl disc, it is weak to heat dissipation, the glare is very bright due to the straight-line characteristics of the light from the LED 'point light' at one point In order to improve the problem that the intensity is too low and the illuminance rate is lowered because the voltage flowing from the lower end of the socket is not constant, the LED module is composed of a plastic diffuser, an LED module, a heat dissipation column, an exterior injection unit, an aluminum heat dissipation extrusion unit, and a power PCB. Consists of a metal PCB, the first heat dissipation, the second heat dissipation with the heat dissipation shinjube, the third heat dissipation with the aluminum heat dissipation extruder, the semi-reflective aluminum reflector is formed on the front of the LED module, the LED reflecting groove of the aluminum reflector A bent portion is formed at an angle of 1 to 89 ° from the upper end to the lower end of the image, and is formed in a shape in which the diameter is gradually enlarged. Because it spread as distribution, to provide such a heat dissipation and reflectance can be further improved quality LED Illumination Direct is its purpose.

LED direct light, metal PCB, surface emitting, LED incandescent

Description

LED direct light with excellent heat dissipation and reflectance {THE LED LIGHTING}

The present invention relates to an LED direct light having excellent heat dissipation and reflectance used in homes, companies, and factories in place of incandescent bulbs.

Generally, incandescent lamp is a light source that gets light by temperature radiation while filament wire is heated to high temperature when the filament wire is put in a glass of vacuum. Gas is added to suppress evaporation, prolonging life.

Ordinary incandescent lamps, which emit light close to natural light, can reduce eye fatigue and are easily detachable from the socket, which is one of the most widely used lighting lamps with fluorescent lamps since Edison was designed by Edison, but most of the energy is It has the disadvantage of low thermal efficiency because it is emitted and only part of it is used as light.

LED (light emitting diode) is a light source using light emitting phenomenon generated when voltage is applied to semiconductor, and the brightness has been improved enough to be used for lighting due to technology development over the past years. Its life span is long, bright and clear, and its use is expected to spread for general light bulbs.

In the prior art, Korean Patent Registration No. 10-0799518 uses one or more LEDs (Light Emitting Diodes) installed in PCs as a light source, and induces light of the heat dissipation means and LEDs connected to the PCs. It consists of a luminaire including a light induction diffusion means, the light induction diffusion means body is formed in the form of agglomerate on one side of the LED and the light-receiving body is the light incident through the light-receiving unit body The surface light (LED) light fixture having an external surface light emitting part that is guided through and emitted into the surface light has been proposed.

In addition, Korean Patent No. 10-0759803 No. LED light source; A substrate to which the LED is fixed; A heat sink installed at a lower side of the substrate through a thermally conductive adhesive member to discharge heat generated from the LED to the outside; Spherical glass sphere surrounding the LED; A driving unit having a constant voltage source and a constant current source to supply stable voltage and current to the LED; A lower protective case accommodating the heat sink and the driving part while forming an appearance together with the glass sphere; The LED incandescent bulb has been presented, which is installed in the lower protective case and comprises a light bulb base that is fixedly connected to an external power supply so as to supply driving power to the LED.

However, these conventional technologies have a problem that the diffusion hole of the LED incandescent bulb is made of a light guide plate and an acrylic disc, making it difficult to mass-produce, and do not effectively dissipate heat from a plurality of LEDs, thereby shortening the life of the LED.

In addition, a reflector plate formed by vacuum deposition of an aluminum metal film was formed on the inner surface of the lower end of the glass sphere, but the glare was severely reflected due to the straight-line characteristic in which the light emitted from the LED was 'splunged' at one point, and the reflection efficiency was poor, resulting in high illuminance efficiency. There was a problem falling.

In order to solve the above problems, in the present invention, the LED module is made of a metal PCB, the first heat dissipation, the second heat dissipation with the heat dissipation shinjubu, the third heat dissipation with the aluminum heat dissipation extruded, semi-arc aluminum on the front of the LED module The reflecting plate is formed, and the LED reflecting groove of the aluminum reflecting plate is formed in a bent portion from 1 to 89 ° as it goes from the upper end to the lower end on the plane, and is formed in a shape in which the diameter is gradually enlarged. Since it is widely distributed while being distributed, an object of the present invention is to provide an LED direct light having excellent heat dissipation and reflectance which can further improve illuminance.

LED direct light having excellent heat dissipation and reflectance according to the present invention to achieve the above object,

A plastic diffusion part which is located in front of the LED module and converts an LED point light source having a straightness into a surface light source,

A circular PCB substrate is formed to be included in the plastic diffusion portion, a plurality of LEDs are disposed on the front surface of the PCB substrate, heat is radiated primarily from the LEDs on the rear surface of the PCB substrate, and the LED lights up stably. LED module with SMT mounted constant current circuit and constant voltage control circuit,

It is installed in a cylindrical shape between the LED module and the aluminum heat dissipation extrusion unit, and the heat dissipation unit for heat dissipation of the remaining heat secondary to the LED module, and

An exterior injection unit having a ventilated structure to receive the heat dissipation unit and the aluminum heat dissipation extruder in a cylindrical shape, and having a ventilation structure so that the outside air flows into the heat dissipation unit and the aluminum heat dissipation extrusion unit;

The aluminum is inserted into the rear end surface of the exterior injection unit, and is formed in a cylindrical through shape so that the heat dissipation column is included and accommodated therein, and heat radiates the heat remaining in the heat dissipation column through the plurality of wing parts formed on the surface. Heat dissipation extrusion part,

It is achieved by being configured with a power PCB which is grounded with the heat dissipation new peripheral portion and converts AC power introduced through the socket portion into DC power so that the LED module can drive.

As described above, in the present invention, the triple heat dissipation structure is excellent in heat dissipation, and the surface light is distributed while being widely distributed while emitting light, so that the illuminance can be further improved, semi-permanently used, anti-glare, It has good effects such as reduced power consumption.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view showing an LED direct light having excellent heat dissipation and reflectivity according to the present invention, Figure 2 relates to an exploded perspective view showing the components of the LED direct light having excellent heat dissipation and reflectance according to the present invention, It is composed of a plastic diffusion part 10, LED module 30, heat dissipation column 40, exterior injection unit 50, aluminum heat dissipation extrusion unit 60, power PCB 70.

The plastic diffusion part 10 is located at the front end of the LED module 30 to change the LED point light source having a straightness to the surface light source, which is the end is semi-circular, as shown in FIG. Both sides are formed in a cylindrical shape to form an integrated capsule structure.

And, the plastic diffuser 10 according to the present invention is to remove the glare when the person directly sees the characteristics of the point light source of the LED, so that the light source is diffused over a wide range, the material is PP (Polypropylene), Any one of polyamide (PA), polyphethal amide (PPA), polycarbonate (PC), polybuthylene terephathalate (PBT), polyphemylene ether (PPE) and polyethylene (PE) resin is selected and used.

Particularly, PP (Polypropylene) is an isotactic polymer obtained by polymerization in the presence of a solvent using aluminum alkyl / titanium tetrachloride-based Ziegler and tana catalysts. It has a surface excellent in strength, heat resistance and the like.

PP can be used in the range of 55% to 95% by weight, but preferably 60% to 80% by weight because the content of PP should be 60% by weight or more to show sufficient impact resistance and tensile strength after molding. Because it can. In addition, the use of more than 80% by weight of PP reduces the content of the plasticizer and stabilizer, which makes the molding difficult and increases the possibility of stress deformation in the future.

In addition, PA (Polyamide) and PPA (Polyphethal Amide) are representatively used as nylon 66, a condensation polymer of hexamethylenediamine and adipic acid, and nylon 6, a polymer of ε-caprolactam, and have excellent impact resistance and chemical resistance. It has excellent electrical properties and flame retardancy.

PC (Polycarbonate) is a thermoplastic resin having an aromatic polycarbonate ester structure. It has excellent mechanical properties, heat resistance, and electrical properties. It is synthesized by direct esterification method of 1.4BG, and has high strength and rigidity even at high temperature, and has excellent fatigue resistance.

In addition, PPE (Polyphemylene Ether) is a synthesis of 2.6 Xylenol from methanol and phenol, has excellent mechanical properties, electrical properties, hot water resistance, heat resistance, PE (Polyethylene) is produced by the polymerization of ethylene (CH2 = CH2) It is a chain-shaped polymer material, and has excellent chemical resistance, electrical insulation, and moldability.

The LED module 30 is a circular PCB substrate is formed so as to be included in the plastic diffusion portion 10, a plurality of LEDs 31 is disposed on the front of the PCB substrate, and coming from the LED on the back of the PCB substrate A constant current circuit and a constant voltage control circuit are SMT mounted so as to dissipate heat primarily and stably light the LED, which is composed of a metal PCB 30a.

As shown in FIGS. 3 to 5, the metal PCB 30a is formed with a GE (Glass Epoxy) PCB 30a-1 with an insertion hole 32 to insert the chip LED 31 on the front surface thereof.

In addition, a rubber insulating pad 30a-2 is formed at a lower end of the glass epoxy PCB 30a-1, and an aluminum heat sink 30a-3 is formed at the bottom of the insulating pad 30a-2.

In this way, by consisting of a metal PCB (30a) formed of a rubber insulating pad (30a-2) and an aluminum heat sink (30a-3) on the bottom of the existing PCB, it is possible to extend the life of the LED weak to thermal characteristics and at the same time Malfunctions of the unit due to heat can be prevented.

In addition, the LED module 30 according to the present invention is driven by a PWM method to supply a constant current to the LED and the power supply to the LED by controlling the SMPS constant voltage output from the power PCB stage It consists of a constant voltage controller 34 is configured on the back of the GE (Glass Epoxy) PCB.

The constant current unit 33 senses the output voltage and applies a constant voltage across R11 to turn on the base current of transistor Q4 to a current caused by the voltage across R11.

This can be expressed as Equation 1 below.

For example, when R11 is 1 W / 1.8 mA, and Vref = 0.6 V, the constant current circuit diagram of the above constant current flows in the above-described constant current of 330 mA.

The constant voltage control section 34 is composed of a noise filter section 34a, a rectifying section 34b, a switching circuit section 34c, a transformer 34d, and a voltage output section 34e, as shown in FIG.

The noise filter 34a includes an inductor L1, and removes a noise component included in a voltage applied from the outside and outputs the noise component to the rectifier.

The rectifier 34b is composed of a rectifier diode D1. The rectifier 34b rectifies AC power output from the noise filter unit, converts the AC power into DC power, and outputs the DC power to the switching circuit unit.

The switching circuit 34c is driven by a DC power output from the rectifier, and generates a pulse signal having a specific frequency and outputs the pulse signal to the transformer. As shown in FIG. 4, the switching circuit unit includes a switching IC, a capacitor C7, and a photocoupler PC1. When the power is input to the Vcc terminal, it outputs 5V, 12V and 24V driving pulses through the drain terminals 3, 2 and 1 to the primary terminal of the transformer.

The transformer 34d switches the DC power of the rectifying unit in response to a pulse output from the switching circuit unit to generate an AC voltage having a plurality of potential levels, and induces 5V, 12V, and 24V voltages to the voltage output unit, respectively. .

The voltage output unit 34e rectifies and regulates the 12V AC power output from the transformer and converts the 12V AC power to a 33V DC voltage through the inductor L2.

In addition, the LED module 30 according to the present invention includes a semi-arc shaped aluminum reflecting plate 20 formed with a plurality of LED reflecting grooves 21 formed on the front surface of the LED module 30 to be inserted into a plurality of LEDs.

Here, the LED reflecting groove 20, as shown in Figure 6, the bent portion is formed from 1 to 30 ° toward the lower end from the upper end on the horizontal plane, the diameter is formed in a shape that is gradually reduced.

The reason why the bent portion is formed at 5 to 30 ° as the LED reflecting groove 20 goes from the top to the bottom on the horizontal plane is less than 5 °, and the diameter of the LED reflecting groove has the same shape as the diameter goes from the top to the bottom. Since the emitted light is reflected back to the LED on the surface of the reflecting groove, the LED itself becomes hot and there is a problem of shortening the life. Above 30 °, the diameter of the LED reflecting groove becomes narrower from the top to the lower side of the LED. Since the LED is not inserted into the reflecting groove well, it takes a lot of production time, so it is most preferable that the bent portion is formed at 1 to 30 ° from the top to the bottom in the horizontal plane.

The heat dissipation shin unit 40 is installed in a cylindrical shape between the LED module and the aluminum heat dissipation extruded portion, and serves to dissipate the remaining heat secondary to the LED module heat dissipation.

As shown in FIG. 2, the heat dissipation shin unit is inserted into the heat dissipation unit main body on the top surface of the exterior injection unit, and a locking step is formed at the top end to be supported by the top surface of the exterior injection unit.

Then, the LED module is grounded on the upper surface of the heat dissipation main unit, the power PCB is grounded and connected to the lower surface.

The exterior injection unit 50 is formed in a cylindrical shape to receive and protect the heat dissipation shin unit and the aluminum heat dissipation extruding unit, and has a ventilation structure so that the outside air flows into the heat dissipation unit and the aluminum heat dissipation extrusion unit accommodated therein.

Here, the ventilation structure is formed of a mesh shape, a rectangular shape, a triangular shape, a rhombus shape and serves to naturally cool the heat remaining in the heat dissipation shin unit and the aluminum heat dissipation extrusion unit due to the draft.

The aluminum heat dissipation extruder 60 is inserted into the rear end face of the exterior injection unit, and is formed in a cylindrical through shape to accommodate the heat dissipation column included therein, and radiates heat from the heat dissipation unit through the plurality of wings formed on the surface. During the third heat dissipation of the remaining heat.

The aluminum heat dissipation extrusion part according to the present invention has a diameter larger than the heat dissipation shin portion, and formed smaller than the diameter of the exterior injection portion, so that the aluminum heat dissipation extruded portion is included to include the heat dissipation column, aluminum heat dissipation extruded containing the heat dissipation column The additional part is configured to be included in the exterior injection part.

With this configuration, the heat radiation is primarily performed on the LED module made of a metal PCB, heat is radiated secondly from the heat dissipation unit to the heat remaining in the LED module, and the heat remaining on the heat dissipation unit is dissipated in the aluminum heat dissipation extruded unit. It consists of a triple heat dissipation structure that makes it possible to use the life of LED semi-permanently.

The power PCB 70 is grounded with the heat dissipation stretch unit and converts AC power introduced through the socket portion into DC power so that the LED module can be driven, which is formed in a cylindrical shape, and the front end portion is connected to the heat dissipation stretch unit and the ground. The rear end is connected with the socket part.

In addition, the power PCB according to the present invention has a power transformer configured to convert AC power into DC power at the bottom, and outputs the DC power output from the power transformer, and at the same time the SMPS constant voltage is supplied so that a constant current flows into the LED module. Is output.

The socket part according to the present invention is made of the same size and shape as the socket of the incandescent lamp, and can be applied to a place where a conventional incandescent lamp has been used.

Hereinafter, a specific operation process of the LED direct lamp having excellent heat dissipation and reflectance according to the present invention will be described.

First, the LED direct light having excellent heat dissipation and reflectance according to the present invention is connected through the socket part in place of the existing incandescent bulb.

Then, AC power is supplied through the socket, and the power PCB converts AC power into DC power through a power transformer. In addition, the SMPS outputs DC power output from the power transformer and introduces a constant current into the LED module.

Subsequently, when power is supplied to the LED module, a plurality of LEDs emit light, and the light emitted from the LEDs is reflected back through the LED reflecting grooves formed in the semi-reflective aluminum reflector.

Subsequently, the light reflected from the LED reflecting groove diffuses the light intensity while converting the LED point light source having the straightness into the surface light source through the plastic diffuser.

In addition, the heat generated from the plurality of LEDs during light emission is primarily radiated from the metal PCB, and the remaining heat of the LED module is radiated secondly from the radiating column. The radiated heat from the radiating column is aluminum radiated extruded part. Heat dissipation in 3rd, can use semi-permanent life of LED.

1 is a perspective view showing an LED direct light having excellent heat dissipation and reflectance according to the present invention,

Figure 2 is an exploded perspective view showing the components of the LED direct light having excellent heat dissipation and reflectance according to the present invention,

Figure 3 is an embodiment showing the structure of the LED module made of a metal PCB among the components of the LED direct light having excellent heat dissipation and reflectance according to the present invention,

Figure 4 is an embodiment showing a GE (Glass Epoxy) PCB and chip LED among the components of the metal PCB according to the present invention,

Figure 5 is an embodiment showing a metal PCB according to the present invention,

6 is a shape in which the bent portion 21a is formed at an angle θ of 5 to 30 ° from a vertical reference line as the LED reflecting groove 21 according to the present invention goes from the upper end to the lower end on a horizontal plane, and the diameter is gradually reduced. In one embodiment, showing that is formed as,

7 is a circuit diagram showing a constant current unit circuit that is a component of the LED module according to the present invention,

8 is a circuit diagram showing a constant voltage control circuit that is a component of the LED module according to the present invention.

※ Brief description of reference numerals ※

10: plastic diffusion part 30: LED module

40: heat dissipation cast unit 50: appearance injection unit

60: aluminum heat dissipation extrusion part 70: power PCB

Claims (5)

A plastic diffuser 10 positioned at a front end of the LED module and converting an LED point light source having a straightness into a surface light source, A circular PCB substrate is formed to be included in the plastic diffusion portion, a plurality of LEDs are disposed on the front surface of the PCB substrate, heat is radiated primarily from the LEDs on the rear surface of the PCB substrate, and the LED lights up stably. LED module 30 is mounted SMT mounted constant current circuit and constant voltage control circuit, A heat dissipation unit (40) installed in a cylindrical shape between the LED module and the aluminum heat dissipation extrusion unit, and dissipating heat remaining after the LED module dissipates heat; It is formed in a cylindrical shape so as to receive and protect the heat radiation shinjube and aluminum heat dissipation extruded portion, the exterior injection unit 50 having a ventilation structure so that the outside air flows into the heat dissipation shinjube and aluminum heat dissipation extruded contained therein; The aluminum is inserted into the rear end surface of the exterior injection unit, and is formed in a cylindrical through shape so that the heat dissipation column is included and accommodated therein, and heat radiates the heat remaining in the heat dissipation column through the plurality of wing parts formed on the surface. A heat dissipation extruder 60, LED direct light having excellent heat dissipation and reflectance, characterized in that consisting of a power PCB (70) for converting the AC power introduced through the socket portion 80 and the DC power so that the LED module is driven to ground with the heat dissipation column . According to claim 1, LED module 30 is a glass (Epoxy) PCB (30a-1) is formed with the insertion hole 32 so that the chip LED 31 is inserted in the front, the GE (Glass Epoxy) An insulating pad 30a-2 of rubber material is formed at the bottom of the PCB 30a-1, and the metal pad 30a is formed of an aluminum heat sink 30a-3 at the bottom of the insulating pad 30a-2. LED direct light with excellent heat dissipation and reflectance. delete According to claim 1, LED module 30 is a half arc-shaped aluminum reflecting plate 20 formed with a plurality of LED reflecting grooves 21 formed on the front side to be inserted and coupled to a plurality of LEDs, characterized in that attached. LED direct light with excellent heat dissipation and reflectance. 5. The LED reflecting groove 21 has a shape in which the bent portion 21a is formed at an angle θ of 5 to 30 ° from the vertical reference line as the LED reflecting groove 21 moves from the upper end to the lower end on the horizontal plane, and the diameter thereof gradually decreases. LED direct light having excellent heat dissipation and reflectance, characterized in that formed.

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