KR20150088616A

KR20150088616A - LED electric bulb

Info

Publication number: KR20150088616A
Application number: KR1020140009138A
Authority: KR
Inventors: 어익수; 김상규
Original assignee: 호남대학교 산학협력단
Priority date: 2014-01-24
Filing date: 2014-01-24
Publication date: 2015-08-03

Abstract

The present invention relates to an LED bulb, and more particularly, to an LED bulb capable of widening the angle of divergence to greatly increase the irradiation efficiency.
To this end, the present invention provides a lamp module comprising: a lamp body formed with a heat dissipating part for dissipating heat generated from an LED module and having a socket coupling part at one side thereof; an LED module installed inside the other side of the lamp body; A module coupling part protruding in a predetermined length and having a lower end integrally or detachably coupled to the heat radiating part is installed inside the other side of the bulb body, A plurality of air flow passages are formed in an inner edge of the heat dissipation portion and a plurality of air flow passages are formed in one end of the heat dissipation portion so as to be connected to the air flow passage, A plurality of air holes are formed to communicate with the inner space of the cap through the air passage, Characterized in that bidoen.

Description

LED bulb {LED electric bulb}

The present invention relates to an LED bulb, and more particularly, to an LED bulb capable of widening the angle of divergence to greatly increase the irradiation efficiency.

In general, a lighting device converts electrical energy into light energy so as to identify an object in a dark place. Such an illumination device is manufactured in various forms, and conventionally, an incandescent lamp or a lighting device using a fluorescent lamp is mainly used Has come.

Although incandescent lamps are inexpensive to manufacture, there is a lot of heat generated in converting electric energy into light energy. Recently, the use of fluorescent lamps has been avoided. Fluorescent lamps have a higher energy conversion efficiency than incandescent lamps, There is a problem of short life span.

In order to solve these problems, LED (Light Emitting Diode) has recently been developed which can obtain a high illuminance with a semi-permanent lifetime.

It has advantages such as fast processing speed of LED semiconductors and low power consumption, and is becoming a next-generation strategic product due to its environment-friendly and energy-saving effect.

The LED device is composed of p-type and n-type semiconductor junctions. When a voltage is applied, the energy corresponding to the band gap of the semiconductor is emitted in the form of light by the combination of electron and hole It is a kind of optoelectronic device.

In recent years, LEDs of various colors have been developed and can be used in various fields such as large outdoor signs for outdoor use, traffic lights, automobile instrument panels, home appliances, neon signboards, medical equipment, warning and guidance.

LED bulbs have been attracting attention as lighting fixtures because of their low power consumption of about 10 ~ 15% compared with conventional incandescent lamps and fluorescent lamps, and more than 100,000 hours of semi-permanent life and environmentally friendly characteristics.

On the other hand, there is disclosed a technique of introducing a metal housing into a housing in which a PCB is in contact with a heat dissipating LED (Patent No. 0956653, Apr. 29, 2010, etc.) to improve the heat radiation performance of the LED and the like.

In addition, in the case where the light emitting part is provided to be rotatable within a predetermined angle range and is installed on a ceiling or a wall surface, the light divergence is concentrated only in a direction desired by the user in the patent publication No. 2010-0106778 (October 04, 2010, LED light bulb) And the like.

However, in the related art, since a plurality of LEDs are arranged on a printed circuit board so that light is emitted in a unidirectional manner, the angle of light emitted from the LED is limited to a wide angle, But sufficient heat dissipation effect can not be obtained and the lifetime of the LED can not be prolonged.

It is an object of the present invention to solve the problems described above. It is an object of the present invention to provide a module coupling part, which can enlarge an angle of diffraction of an LED, The present invention also provides an LED bulb which can extend the lifetime of the LED module as well as the heat dissipation by continuously discharging the internal air due to the formation of the air discharge hole.

According to an aspect of the present invention, there is provided a light emitting diode (LED) module including a light emitting body having a heat dissipating portion formed therein for dissipating heat generated from an LED module and having a socket coupling portion formed on one side thereof, An LED bulb which is coupled to the other side of the bulb body to cover the LED module, the lamp bulb including a module coupling part protruding inside the other side of the bulb body with a predetermined length and having a lower end integrally or detachably coupled to the heat radiating part And the LED module is mounted to the protruding end portion and the circumferential surface of the module connecting portion so as to irradiate light in all directions except for the heat radiating portion, a plurality of air flow paths are formed at the inner edge of the heat radiating portion, And an end portion of the cap is formed to be connected to the air passage, And a plurality of air holes are provided so as to communicate with each other.

The heat dissipation unit is formed of a scrap material.

Wherein the module connecting portion is formed of a cylindrical or triangular or more polygonal column.

The module coupling portion is formed in a trapezoidal shape in cross section so as to extend in a direction in which the heat dissipation portion 12 is provided at an end portion.

And the inner circumferential surface of the cap is formed with a regular or irregular reflection protrusion such that the light emitted from the LED module is reflected.

And an air vent hole is formed at a central portion of the cap at a predetermined size so that internal air is discharged to the outside.

And an identification part marked with a letter and a figure is inserted into a part of the air discharge hole.

The cap is formed in a spherical shape, and only a portion coupled to the bulb body is opened, and a wing piece is extended outwardly and connected to the bulb body.

According to the LED bulb having the above-described configuration, since the angle of incidence of the LED is widened and the light is radiated in all directions, the irradiation efficiency of the light is remarkably improved. Air is introduced into the space inside the cap through the air hole, When the air outlet hole is formed, air drawn into the air hole is discharged through the air outlet hole, so that ventilation is smoothly performed, thereby extending the service life of the LED module as well as the heat radiation.

1 is a perspective view of an LED bulb according to the present invention,
FIG. 2 is an exploded perspective view of FIG. 1,
3 is a side sectional view of Fig. 1,
4 is a sectional view taken along the line AA in Fig. 1,
5 is a cross-sectional view of a cap in which a reflecting protrusion is formed in an LED bulb according to the present invention,
6 is a state in which an air vent hole and an identification portion are formed in the cap in the LED bulb according to the present invention,
7 is a sectional view of the LED bulb of Fig. 6;

Hereinafter, an LED lamp according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an LED bulb according to the present invention, FIG. 2 is an exploded perspective view of FIG. 1, FIG. 3 is a side sectional view of FIG. 1, FIG. 6 is a sectional view of an LED bulb according to an embodiment of the present invention. FIG. 6 is a sectional view of the LED bulb of FIG. 6;

1 to 7, an LED bulb according to the present invention includes a bulb body 10, an LED module 20 installed inside the bulb body 10, And a cap 30 covering the LED module 20.

A heat dissipating portion 12 is formed in the bulb body 10 to dissipate heat generated in the LED module 20 like a normal bulb. A socket coupling portion 16 is formed at one side of the bulb body 10, Respectively.

Here, the heat dissipating unit 12 is formed of a fragile material. Generally, the heat dissipating unit is formed of aluminum or metal to radiate heat, but in the present invention, the heat dissipating unit is formed of a scrap material to achieve heat dissipation.

The reason for the formation of a fragile material is that it can be manufactured at low cost while having a beautiful appearance.

The LED module 20 is installed inside the other side of the bulb body 10 opposite to the socket coupling part 16 and includes an LED and a PCB substrate in the same structure as a conventional LED module , And an LED for irradiating two or more lights to emit various colors of light may be installed.

At this time, the LED module 20 may be coupled to a module coupling part 40 protruding inside the other side of the bulb body 10.

The module coupling part 40 is integrally or detachably coupled to the heat dissipating part 12 and protrudes inside the other side of the bulb body 10 with a predetermined length.

The LED module 20 is positioned in the vicinity of the center of the inner space of the cap 30 so that the light emitted from the LED module 20 passes through the heat sink 12, So that the luminous flux of 300 DEG or more is obtained as in the case of an ordinary incandescent lamp.

Preferably, the LED module 20 may be coupled to a protruding end portion and a circumferential surface of the module connecting portion 40. In FIG. 2, the vicinity of the end of the module connecting portion 40 is formed in a rectangular shape And the LED module 20 is provided on each of the end and slope of the module connecting portion 40 formed by the square.

As shown in the drawing, the light emitted from the LED module 20 can be irradiated to all portions except the portion provided with the heat dissipation portion 12, so that it is possible to have a significantly wider angle of incidence than the conventional LED bulb.

The modular connector 40 may be formed in various shapes such as a cylindrical shape or a polygonal column of a triangular shape or more, or a cylindrical column and a polygonal column may be formed together as shown in the drawing, May be formed in a trapezoidal shape so as to be enlarged in a direction in which the heat dissipation unit 12 is provided at the end portion.

Meanwhile, the light emitted from the LED module 20 may be reflected without being transmitted through the cap 30, and may be irradiated in all directions, thereby achieving a more uniform brightness.

For this, as shown in FIG. 5, a reflection protrusion 32 may be formed on the inner circumferential surface of the cap 30 in order to reflect light emitted from the LED module 20 or irregularly.

The heat dissipation unit 12 is formed of a scrap material as described above. In addition, the heat dissipation unit 12 includes a heat dissipation unit 12, An air hole 14 is formed at one end of the heat dissipating unit 12 so as to be connected to the air passage 13 so as to communicate with the inner space of the cap 30 through the air passage 13, Respectively.

A plurality of the air holes 14 are formed along one edge of the heat dissipating part 12 and the air holes 14 are connected to the air flow path 13 formed at the inner edge of the heat dissipating part 12 So that air is drawn into the internal space formed by the cap 30.

Therefore, the inner space of the cap 30 is heat-exchanged by the air introduced through the air holes 14, and the temperature rise is restricted. By the air introduced through the air holes 14, The inner and outer sides of the heat sink 12 are exposed to the air so that the heat radiation of the heat dissipation unit 12 is effectively performed.

6 and 7, an air vent hole 34 may be formed in a central portion of the cap 30 so that the air introduced into the internal space of the cap 30 may escape to the outside. have.

The air vent holes 34 are formed for the external discharge of the inside air. The air vent holes 34 may be formed at least one size, The heat dissipation effect can be maximized.

Here, the identification part 50 marked with a letter and a figure may be fitted to a part of the air vent hole 34. The identification unit 50 may indicate the name of the bulb, the standard, the manufacturer, and the like.

The air should be discharged through the air discharge hole 34 even when the identification part 50 is engaged with the air discharge hole 34. [

The identification unit 50 is formed in a rectangular shape so that the identification unit 50 can be inserted into the identification unit 50 from outside of the identification unit 50 So that a flow path of air can be formed.

The cap 30 of the present invention is preferably formed as a complete sphere rather than a simple sphere.

That is, it is preferable that only the portion to be coupled to the bulb body 10 is formed as an opening spherical shape, and a blade piece 36 is extended outwardly to be connected to the bulb body 10.

The reason why the cap 30 is formed in a spherical shape is that if one side of the cap 30 connected to the socket coupling part is long and formed into a balloon shape like a normal incandescent lamp, So that uniform irradiation can be performed.

The light emitted from the LED module 20 passes through the spherical cap 30 and is radiated to the outside. At this time, the LED module 20 is attached to the end of the module connecting portion 40 The light is radiated in all directions of the cap 30 as well as the LED module 20 is positioned in the vicinity of the central portion of the cap 30 to irradiate light in all directions, It is possible to have a divergence angle of twice or more as compared with the case of FIG.

In other words, since the conventional LED lamp is configured to radiate light in only one direction, it has a divergence angle of about 140 degrees. In the present invention, light can be irradiated to all parts except the heat dissipation part 12, Or more.

In addition, since the light irradiated by the reflection protrusion formed on the inner peripheral surface of the cap 30 is reflected, the light can be irradiated with a more uniform luminance.

Even if a relatively large number of the LED modules 20 are installed in the cap 30, the air introduced through the air holes 14 is discharged through the air discharge holes 34, It is possible not only to radiate heat but also to reduce the damage or breakage of the LED module, thereby greatly increasing the service life and reducing the maintenance cost.

10: bulb body 12:
13: air passage 14: air hole
16: socket coupling part 20: LED module
30: Cap 32: Reflective projection
34: air vent hole 36: blade reorganization
40: Module coupling unit 50: Identification unit

Claims

A lamp body 10 in which a heat dissipating unit 12 is formed to dissipate heat generated from the LED module 20 and a socket coupling unit 16 is formed on one side of the lamp body 10; An LED bulb comprising an LED module (20) and a cap (30) coupled to the other side of the bulb body (10) to cover the LED module (20)
A module coupling part 40 protruding at a predetermined length and having a lower end integrally or detachably coupled to the heat radiating part 12 is installed inside the other side of the bulb body 10, And is installed to project light in all directions except for the heat radiation part (12) by being coupled to the protruding end part and the circumferential surface of the joint part (40)
A plurality of air flow paths 13 are formed on the inner edge of the heat dissipation part 12 and one end of the heat dissipation part 12 is connected to the air flow path 13, Wherein a plurality of air holes (14) are provided to communicate with the inner space of the cap (30).

The method according to claim 1,
Wherein the heat dissipating part (12) is formed of a fragile material.

The method according to claim 1,
Wherein the modular connector (40) is formed in a cylindrical shape or a triangular or polygonal column.

The method according to claim 1,
Wherein the modular connector (40) has a trapezoidal cross-sectional shape extending in a direction in which the heat dissipating unit (12) is provided at an end thereof.

The method according to claim 1,
Wherein a reflective protrusion (32) is formed on an inner circumferential surface of the cap (30) in a regular or irregular manner to reflect light emitted from the LED module (20).

The method according to claim 1,
Wherein an air vent hole (34) is formed in a central portion of the cap (30) to have a predetermined size so that internal air is discharged to the outside.

The method according to claim 6,
Wherein an identification part (50) marked with a letter and a figure is fitted in a part of the air discharge hole (34).

The method according to claim 1,
The cap (30) is formed in a spherical shape, and only a portion coupled to the bulb body (10) is opened, and a blade piece (36) is extended outwardly and connected to the bulb body (10) bulb.