KR20160139737A - Light diffusion pipe formed by rolling a sheet and led illumination device of fluorescent type having the pipe - Google Patents

Abstract

Disclosed are a light diffusion pipe mounting a light source inside and an LED illumination device including the same. To this end, provided is the light diffusion pipe formed by rolling a sheet including a light diffusion unit which diffuses light emitted from the light source installed inside, to the outside, and connection units which are formed on both sides of the light diffusion unit and are connected by coming into contact with each other. According to the present invention, the light diffusion pipe and the LED illumination device are simply manufactured, and the weight of the light diffusion pipe and the weight of the LED illumination device are reduced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light diffusion pipe formed by rolling a sheet, and a fluorescent lamp type LED lighting device including the same. BACKGROUND OF THE INVENTION 1. Field of the Invention [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light diffusion pipe formed by rolling a sheet and a fluorescent lamp type LED lighting apparatus including the same, and more particularly, And a fluorescent lamp type LED lighting device including the light diffusion pipe.

Nowadays, most homes and offices use fluorescent lights as lighting fixtures. A fluorescent lamp is a lighting device that injects mercury and argon gas into a vacuum glass tube and applies a fluorescent material to the inner wall of a glass tube, and ultraviolet rays generated by mercury discharge stimulates the fluorescent material to turn into visible light.

The fluorescent lamp has a power consumption of 1/3 of that of an incandescent lamp, a good efficiency, and a long lifetime of 3000 hours. However, when the applied voltage is high, the blackening phenomenon progresses in the fluorescent lamp to shorten the life span, and when the low voltage is applied, the fluorescent lamp is not turned on.

Recently, a light emitting diode (hereinafter referred to as LED) having a merit of low power, long life, and environment friendliness has been used as a light source instead of a fluorescent lamp having such a problem. Unlike other light sources, LED is an eco-friendly light source that does not contain mercury, and is widely regarded as a next-generation light source for backlight for cellular phone, backlight for LCD TV, vehicle lamp, and general illumination.

These LEDs are excellent in efficiency of converting electric power into light, and are more economical than the currently used fluorescent lamps or incandescent lamps in terms of the light efficiency compared to the unit power. Since the light intensity is as high as desired even at a low voltage, Is increasingly used.

Korean Patent Registration No. 10-1091307 discloses an LED fluorescent lamp having a vacuum structure. The above technology relates to an LED fluorescent lamp having a waterproof and moisture-proof function by integrating a light diffusion pipe into a socket and an interior of the socket so as to be in a vacuum state.

The LED module 101 includes a plurality of LEDs 100 fixed to the upper portion thereof and a PCB substrate 102 for supplying power to the LEDs 100; And a base 104 having an insertion groove 106 formed at both ends in the longitudinal direction and formed integrally in the shape of a cylinder and having an engaging portion 107 for inserting in the longitudinal direction into the insertion groove 106 of the pedestal 104 , A light diffusion pipe 108 configured to receive the pedestal 104 therein, and a socket 150 for sealing the openings at both ends of the light diffusion pipe.

The plurality of LEDs 100 emit light to generate heat and this heat is transmitted to the PCB substrate 102, which causes the lifetime of the plurality of LEDs 100 and the PCB substrate 102 to be reduced due to heat. In this technique, the pedestal 104 functions as a heat sink for emitting heat of the PCB substrate 102, and is generally formed of a metal such as aluminum or magnesium.

Since the metal material is heavy and does not have a reflective function, the light emitted from the plurality of LEDs 100 is reflected by the reflection wall 124 ) Must be formed, which complicates the manufacturing process. When the pedestal 104 is made of a metal such as aluminum, if the surface treatment is not performed, light is absorbed and the illuminance of the LED fluorescent lamp is lowered.

Korean Registered Patent No. 10-1091307 (Registered on December 1, 2011) Korean Registered Patent No. 10-1270257 (Registered on May 27, 2013) Korean Patent Publication No. 10-2014-0029580 (published April 31, 2014)

Accordingly, it is an object of the present invention to provide a light diffusion pipe which is easy to manufacture and can reduce the weight of an LED lighting device, effectively transmit and diffuse light generated from an LED light source to improve illuminance, And to provide a light diffusion pipe formed by rolling a sheet capable of providing a variety of product groups and a fluorescent lamp type LED lighting device including the same.

In order to achieve the object of the present invention, the light diffusion pipe of the present invention comprises: a light diffusion part for diffusing light emitted from a light source provided therein; and a light diffusion part formed on both sides of the light diffusion part, And a connecting portion. In order to improve the diffusibility of the sheet, a bead may be coated on the surface of the sheet, or a thread (pyramid) pattern may be formed on the surface of the sheet by an acid and a sphere.

In this case, the connecting portion is connected to each other by heat sealing, an adhesive, a rivet, a takap pin, or a stapler, or a tightening member capable of tightening the connecting portion, and when the connecting portion is connected to each other by the rivet, Is fixed to the connecting portion by the rivet.

Meanwhile, a light diffusion pipe provided with a cradle in which an LED module is inserted may include a light diffusion unit for diffusing light emitted from the LED module to the outside, and a light diffusion unit formed on both sides of the light diffusion unit, And a connecting portion.

The connecting portion may be formed in a foldable form so as to be coupled to and detached from the cradle, or a hole into which the fixing pin formed in the cradle is inserted may be formed in the connecting portion.

According to another aspect of the present invention, there is provided an LED lighting device comprising: an LED module having a plurality of LEDs for converting electrical energy into light energy; a base for seating the LED module; a diffusion sheet for diffusing light emitted from the LED module to the outside; And a pair of sockets electrically connecting the LED module to an external circuit and sealing the openings at both ends of the light diffusion pipe.

The light diffusion pipe formed by rolling the sheet of the present invention and the fluorescent lamp type LED lighting device including the sheet of the present invention can be manufactured easily and reduce the weight of the LED lighting device by forming a light diffusion pipe by rounding a rectangular flat diffusion sheet .

Further, in the case of manufacturing a pipe shape by rolling a sheet, it is easy to apply particles for enhancing light diffusion to the surface or to form a separate pattern on the surface in the sheet state, and as a result, Pipe can be provided.

In addition, when the cradle on which the LED light source is mounted is coupled to the light diffusion pipe, various products can be manufactured and used because it can be easily replaced with a light diffusion pipe of different color or pattern as required.

In addition, by manufacturing the light diffusion pipe and the holder by performing the cut-to-cut method or the sewing line drawing method along the design line, various design products and products having various functions can be produced, and the manufacturing process can be simplified.

1 is an exploded perspective view of an LED lighting apparatus to which a light diffusion pipe according to a first embodiment of the present invention is mounted;
2 is a view showing a sheet forming a light diffusion pipe according to a first embodiment of the present invention,
3 and 4 are cross-sectional views of a light diffusion pipe and a cradle associated therewith according to a first embodiment of the present invention,
5 is an exploded perspective view of an LED lighting apparatus to which a light diffusion pipe according to a second embodiment of the present invention is mounted,
6 is a sectional view showing a sheet forming a light diffusion pipe according to a second embodiment of the present invention,
7 is a view showing a detailed configuration of a cradle mounted for forming a light diffusion pipe according to a second embodiment of the present invention,
8 is a cross-sectional view of a light diffusion pipe and a cradle coupled thereto according to a second embodiment of the present invention,
9 is an exploded perspective view of an LED lighting apparatus to which a light diffusion pipe according to a third embodiment of the present invention is mounted, and
10 is a cross-sectional view of a light diffusion pipe and a cradle coupled thereto according to a third embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. The invention is capable of various modifications and may take various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprising" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, referring to the accompanying drawings, a light diffusion pipe formed by rolling a sheet according to a preferred embodiment of the present invention and a fluorescent light type LED lighting device (hereinafter, referred to as a 'light diffusion pipe and LED lighting device' .

FIG. 1 is an exploded perspective view of an LED lighting device in which a light diffusion pipe according to a first embodiment of the present invention is mounted, FIG. 2 is a view showing a sheet forming a light diffusion pipe according to a first embodiment of the present invention, 3 and 4 are sectional views of a light diffusion pipe and a cradle associated therewith according to a first embodiment of the present invention.

Referring to FIG. 1, an LED lighting apparatus includes a light diffusion pipe 100, a cradle 200, an LED module 300, and a pair of sockets 400.

The light diffusion pipe 100 is formed by rolling a sheet, as shown in FIG. 2, and includes a light diffusion portion 120 and a connection portion 140. Here, the sheet forming the light diffusion pipe 100 is a sheet of a diffusion sheet made of PET (PolyEthylene Terephthalate) material or PC (Polycarbonate) material. Such a diffusion sheet is manufactured to have various transmittances such as transparent or translucent. The light diffusion pipe 100 is formed by rounding a rectangular flat diffusion sheet, wherein the cross section of the light diffusion pipe 100 can be circular and elliptical.

The light diffusing unit 120 diffuses the light emitted from the LED module 300 installed therein. The cross section of the light diffusion portion 120 may be formed in a circular shape as illustrated in the drawing, or may be formed in an elliptical shape, though not shown in the drawings. In addition, although not shown in the drawings, the light diffusion portion 120 may be formed to have a polygonal shape such as a triangle or a quadrangle by forming a line in the longitudinal direction of the light diffusion portion 120.

1 to 4, the connecting portion 140 is coupled to the holder 200 to be connected to each other, thereby forming a light diffusion (not shown) The pipe 100 is formed.

More specifically, as shown in step 1 of FIG. 2, a diffusion sheet is punched through a half-cut or a design line (a sewing line) that cuts only half the thickness of the diffusion sheet, Create two fold lines on the longitudinal edge. As shown in step 2 of FIG. 2, when the diffusion sheet is folded along a folding line so that the cut portion is inward, the 'C' shaped concave portion 140 including the engaging portion 144 and the contact surface 142, .

3 and 4, the light-diffusion pipe 100 is formed by connecting the joint portion 140 formed as described above to the joint portion 240 of the mount 200. Here, the engaging portion 144 is inserted into the engaging portion 240, and the contact surfaces 142 are kept in contact with each other or a minute gap is maintained.

3 and 4, the mount 200 includes a seating part 220 on which the LED module 300 is mounted and a coupling part 240 coupled with the connection part 140. [ The LED module 300 is slidably inserted into the seating part 220 and the coupling part 144 of the connection part 140 is inserted into the coupling part 240. As shown in FIG. 3, the coupling portion 240 may have the same width as the seating portion 220, or may have a width equal to the width of the coupling portion 144 as illustrated in FIG. 4, And is formed to have a narrow width. 4, even if a minute gap exists between the contact surfaces 142, the latching part 144 is held in a state of being fit tightly with the coupling part 240, so that the coupling force between the light diffusion pipe 100 and the base 200 .

The holder 200 is most preferably formed of a metal material such as aluminum, or may be formed of a synthetic resin. That is, the material of the cradle 200 is a material having a heat-dissipating function and can be easily folded through a cut-cut or punching method. For example, when the base 200 is made of synthetic resin, it is preferable to use a synthetic resin stretched under a temperature condition of a crystallization temperature (Tc) or less so as to reflect light emitted from a plurality of LEDs 350. When the base 200 is made of aluminum, it is preferable that the surface is smoothly subjected to reflection treatment to increase the reflectance.

The LED module 300 is formed by mounting a plurality of LEDs 350 on a printed circuit board (PCB) on which a circuit pattern is formed and is seated on the seating portion 220 of the mount 200. The plurality of LEDs 350 convert electric energy into light energy, and are arranged in a line on a circuit pattern formed in series and in parallel, and can be mounted by adjusting the number as needed. The plurality of LEDs 350 may have a size of 8 mm in width, 1.5 mm in height, and 1 mm in height, and the plurality of LEDs 350 may be formed of a single light source of white or red, And a light source may be combined.

The LED module 300 is subjected to a light reflection coating process for reflecting light on a surface on which a plurality of LEDs 350 are mounted to reflect the light emitted from the plurality of LEDs 350, To spread out.

The pair of sockets 400 seal openings at both ends of the light diffusion pipe 100 and each socket 400 is provided with a terminal for electrically connecting the LED module 300 to an external circuit. That is, the pair of sockets 400 seal the light diffusion pipe 100 so that foreign matter and moisture do not flow into the light diffusion pipe 100. A connection pin, which is connected to the fluorescent lamp socket, protrudes from the outside of each socket 400 and is electrically connected to an external circuit.

FIG. 5 is an exploded perspective view of an LED lighting device in which a light diffusion pipe according to a second embodiment of the present invention is mounted, FIG. 6 is a sectional view showing a sheet forming a light diffusion pipe according to a second embodiment of the present invention, 8 is a cross-sectional view of a light diffusion pipe and a cradle associated therewith according to a second embodiment of the present invention; Fig. 8 is a cross-sectional view of a light diffusion pipe according to a second embodiment of the present invention; to be.

Referring to FIG. 5, the LED lighting apparatus includes a light diffusion pipe 100, a cradle 200, an LED module 300, and a pair of sockets 400.

The light diffusion pipe 100 is formed by rolling the sheet shown in FIG. 6 and includes a light diffusion portion 120 and a connection portion 140. Here, the sheet forming the light diffusion pipe 100 is a single diffusion sheet made of PET material or PC material. Such a diffusion sheet is manufactured to have various transmittances such as transparent or translucent. The light diffusion pipe 100 is formed by rounding a rectangular flat diffusion sheet, wherein the cross section of the light diffusion pipe 100 can be circular and elliptical.

The light diffusing unit 120 diffuses the light emitted from the LED module 300 installed therein. The light diffusion portion 120 may have a circular shape in cross section as illustrated in the drawing, or may be formed in an elliptical shape although not shown in the drawing. Also, although not shown in the drawing, a line connecting the light diffusion unit 120 may be formed so that the end face of the light diffusion unit 120 is formed in a polygonal shape such as a triangle or a quadrangle.

The holes 160 are formed at predetermined intervals in the longitudinal direction of the connecting part 140. The plurality of holes 160 are coupled to the fixing pins 280 of the cradle 200 so that the connecting parts 140 are connected to each other Thereby forming a light diffusion pipe 100.

7, the holder 200 includes a seating part 220 on which the LED module 300 is seated, a heat dissipating part 260 for discharging heat generated from the LED module 300 to the outside, And a plurality of fixing pins 280 mounted on the plurality of holes 160 formed in the fixing holes.

More specifically, the plurality of LEDs 350 emit heat energy together with light energy while emitting light. The heat energy generated by the plurality of LEDs 350 is emitted to the outside of the light diffusion pipe 100 through the heat dissipation unit 260. That is, since the seating part 220 on which the LED module 300 is mounted and the heat dissipation part 260 located on the outer side of the light diffusion pipe 100 are connected to each other, (260). At this time, external air flows in and out through the empty space formed in the heat dissipating unit 260, so that the heat energy can be discharged to the outside more efficiently.

The plurality of fixing pins 280 are formed in the mount 200 at the same intervals as the plurality of holes 160. Referring to FIGS. 7 and 8, the plurality of fixing pins 280 are formed in a cylindrical shape with a trunk portion and a pointed shape with a sharp head. The light diffusion pipe 100 is formed by sandwiching a plurality of fixing pins 280 having such a shape in a plurality of holes 160. Here, the fixing pin 280 fitted in the hole 160 is caught by the curved head portion and does not easily come off, so that the coupling force between the light diffusion pipe 100 and the mount 200 is improved.

The holder 200 is most preferably formed of a metal material such as aluminum, or may be formed of a synthetic resin. That is, the material of the cradle 200 is a material having a heat-dissipating function and can be easily folded through a cut-cut or punching method. For example, when the base 200 is made of synthetic resin, it is preferable to use a synthetic resin stretched under a temperature condition of a crystallization temperature (Tc) or less so as to reflect light emitted from a plurality of LEDs 350. In the case where the base 200 is made of aluminum, it is possible to use the surface after the surface is smoothly reflected to increase the reflectance.

The configuration and function of the LED module 300 and the pair of sockets 400 are the same as those of the first embodiment of the present invention described with reference to FIG. 1 to FIG.

In the first and second embodiments of the present invention, the connecting portion 140 is coupled to the cradle 200 to form the light diffusion pipe 100. However, when the cradle 200 is different in shape, ), Or may be fused by using heat or ultrasonic waves to form the light diffusion pipe 100.

FIG. 9 is an exploded perspective view of an LED lighting apparatus to which a light diffusion pipe according to a third embodiment of the present invention is mounted, and FIG. 10 is a sectional view of a light diffusion pipe and a cradle coupled thereto according to a third embodiment of the present invention.

9, the LED lighting apparatus includes a light diffusion pipe 100, a cradle 200, an LED module 300, a pair of sockets 400, and a plurality of rivets 500.

The light diffusion pipe 100 is formed by rolling a single sheet, and includes a light diffusion portion 120 and a connection portion 140. Here, the sheet forming the light diffusion pipe 100 is a single diffusion sheet made of PET material or PC material. Such a diffusion sheet is manufactured to have various transmittances such as transparent or translucent. The light diffusion pipe 100 is formed by rounding a rectangular flat diffusion sheet, wherein the cross section of the light diffusion pipe 100 can be circular and elliptical.

The light diffusing unit 120 diffuses the light emitted from the LED module 300 installed therein. The light diffusion portion 120 may have a circular shape in cross section as illustrated in the drawing, or may be formed in an elliptical shape although not shown in the drawing. Also, although not shown in the drawing, a line connecting the light diffusion unit 120 may be formed so that the end face of the light diffusion unit 120 is formed in a polygonal shape such as a triangle or a quadrangle.

The connecting portion 140 is a portion overlapping on both sides of the light diffusion portion 120 in the longitudinal direction and connected to each other by a rivet 500. It is also possible that the connecting portion 140 is formed through an adhesive or heat fusion to the overlapping portion of the sheet before the rivet 500 is mounted.

The LED module 300 is mounted on the mount 200 and fixed to the connecting portion 140 by a rivet 500. The lower surface of the holder 200 is formed to have the same curved surface as the connecting portion 140. The material of the holder 200 may be a metal material such as aluminum or a synthetic resin. That is, the material of the cradle 200 is a material having a heat-dissipating function and can be easily folded through a cut-cut or punching method.

The rivet 500 is mounted in the hole formed in the cradle 200 and the connecting portion 140 so that the cradle 200 is fixed to the connecting portion 140. That is, holes are formed at equal intervals in the connecting portion 140 formed by overlapping the edges of the sheet and the holder 200, and then the rivets 500 are mounted to fix the holder 200 to the connecting portion 140 . A hole is formed in the center of the rivet 500 and thermal energy generated from the LED module 300 mounted on the mount 200 through the hole formed in the rivet 500 may be discharged to the outside.

9 and 10 illustrate the case where the rivet 500 is used. However, the holder 200 may be fixed to the connecting portion 140 by using a tacker pin, a stapler, .

The configuration and function of the LED module 300 and the pair of sockets 400 are the same as those of the first embodiment of the present invention described with reference to FIG. 1 to FIG.

In all the embodiments of the present invention, diffusion sheets of various colors can be used to make various kinds of light diffusion pipes 100, and diffusion sheets in which various patterns are drawn can be used.

Further, in the case of manufacturing a cylindrical pipe by a conventional extrusion method, it is not easy to perform separate processing to improve the light diffusion performance. However, when a pipe is formed by rolling a sheet like the present invention, It is necessary to complete the shape of the pipe by performing various processes for improving the light diffusibility, so that the manufacture of the light diffusion pipe having improved light diffusion efficiency becomes smooth.

That is, in the case of manufacturing a pipe shape by extrusion, the extrusion process is a process of extracting the molten material into a specific shape with a strong pressure, and therefore it is impossible to form a separate layer on the surface or form a separate pattern. In addition, if the pipe is already formed, its cross section is in the form of a closed curve in which the inner and outer portions are divided, so that it is not easy to apply a separate substance to the inner surface of the pipe or perform separate processing. Further, since the surface shape is not a plane but a curved surface, The following becomes difficult in the process.

However, in the case of manufacturing a pipe shape by rolling a sheet like the embodiment of the present invention, it is easy to apply particles for enhancing light diffusion to the surface or to form a separate pattern on the surface in the sheet state before the end stage, , This process can be smoothly performed on both sides of the sheet.

For example, it is possible to apply beads to the diffusion sheet to increase the diffusion characteristics of light. That is, synthetic resin particles (beads) obtained by pulverizing acrylic resin into particles having a size of about 10 to 50 mu m are mixed with an adhesive and applied on one side of the diffusion sheet. Since the beads are applied to the outside of the light diffusing pipe 100 formed by rolling, the light generated from the LED module 300 installed inside the light diffusing pipe 100 passes through the light diffusing pipe 100, .

Alternatively, it is possible to use a diffusion sheet by generating a thread shape to increase the light diffusion property. For example, the surface of the diffusion sheet is scraped off with a pointed tool or the like to form a mountain and a valley so that a prism effect is generated. The light emitted from the LED module 300 installed in the light diffusion pipe 100 passes through the light diffusion pipe 100 because the thread shape is located on the surface of the light diffusion pipe 100 formed by rolling. And is dispersed in various directions while passing through the surface formed in the form of a screw.

As described above, the beads can be applied to the diffusion sheet, or one side of the diffusion sheet can be formed into a thread shape, so that the light diffusion function can be expected to be improved as compared with the existing diffusion sheet.

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 and scope of the invention as defined in the appended claims. It can be understood that it is possible.

100: light diffusion pipe 120: light diffusion part
140: connecting portion 142: contact surface
144: engaging portion 160: hole
200: cradle 220:
240: coupling portion 260: heat dissipating portion
280: Fixing pin 300: LED module
350: LED 400: a pair of sockets
500: Rivet

Claims (9)

A light diffusing unit for diffusing light emitted from a light source provided inside; And
And a connecting portion formed on both sides of the light diffusion portion and contacting and connected to each other. The method according to claim 1,
Wherein the light diffusion pipe is formed by applying beads to one surface of the sheet. The method according to claim 1,
Wherein one surface of the sheet is formed in a thread-like shape formed by an acid and a valley. The method according to claim 1,
The connecting portion includes:
And is connected to each other by heat sealing, adhesive, rivet, takapin, stapler, or tightening member. 5. The method of claim 4,
Wherein the light source is fixed to the connecting portion by the rivet when the connecting portion is connected to the connecting portion by the rivet. A light diffusing pipe provided with a mount for inserting an LED module therein,
A light diffusion unit for diffusing light emitted from the LED module to the outside; And
And a connection part formed on both sides of the light diffusion part and coupled to the cradle and connected to each other. The method according to claim 6,
Wherein the connecting portion is folded and formed in such a manner that the connecting portion can be coupled to and detached from the cradle. The method according to claim 6,
Wherein the connecting portion is formed with a hole through which the fixing pin formed in the holder is fitted. A plurality of LED surface mounted LED modules for converting electrical energy into light energy;
A mount on which the LED module is mounted;
A light diffusion pipe formed by rolling a diffusion sheet to diffuse light emitted from the LED module to the outside; And
And a pair of sockets electrically connecting the LED module to an external circuit and sealing the openings at both ends of the light diffusion pipe.

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