WO2016027913A1

WO2016027913A1 - Led lamp

Info

Publication number: WO2016027913A1
Application number: PCT/KR2014/007701
Authority: WO
Inventors: 김대환
Original assignee: 주식회사 케이아이그리드
Priority date: 2014-08-19
Filing date: 2014-08-19
Publication date: 2016-02-25
Also published as: JP2017526154A; JP6483828B2

Abstract

The present invention relates to an LED lamp that has a heat dissipation structure in which bar-shaped LED tubes having heat sinks coupled thereto are coupled to respective heat dissipation fins of a central heat sink, which radially protrude from the outer peripheral surface of a hollow cylindrical body thereof, so as to be disposed in the shape of a pillar of a reel, on which a thread of a kite is wound, while forming gaps for heat dissipation therebetween at a predetermined interval, and the length of the central heat sink is restricted to be smaller than those of the LED tubes, whereby the internal space of the LED lamp is open through the gaps for heat dissipation in all directions so that a space for facilitating the convection of air is ensured to maximize the convection of air irrespective of the installation posture of the LED lamp. The present invention can maximize heat dissipation since the internal space of the LED lamp, where heat generated when the LED tubes and LEDs on a lower substrate emit light is released through the plurality of bar-shaped heat sinks, the central heat sink, and upper and lower heat sinks, is open in all directions to facilitate the convection of air. In particular, the present invention can maximize heat dissipation irrespective of the installation posture of the LED lamp through the heat dissipation structure in which the gaps for heat dissipation, formed between the LED tubes, and the internal space of the LED lamp communicate with each other.

Description

LED lamp

The present invention relates to an LED lamp, and more particularly to an LED lamp having a heat dissipation structure that maximizes air convection regardless of the installation posture.

Recently, various kinds of LED lamps have been developed that can replace discharge lamps such as compact fluorescent lamps, mercury lamps, and metal halide lamps.

Conventional LED lamps have a heat sink around the substrate on which the LED is mounted in order to dissipate heat generated during light emission. However, since a single heat sink is used, most LED lamps have limitations in improving light efficiency and extending service life.

In addition, in the case of increasing the size of the heat sink in order to improve the heat dissipation performance of the LED lamp, the weight of the LED lamp increases and manufacturing cost increases.

In particular, the conventional LED lamp is provided with a heat sink around the substrate, for example, the back of the substrate, the LED is mounted as described above, so that the heat generated from the substrate through the heat sink is smoothly discharged upward by the convection There is a disadvantage that the direction of irradiation of light is limited to the ground.

[Patent Documents]

(Patent Document 1) KR10-0968270 B1

The present invention is to solve the conventional problems as described above, an object of the present invention is to provide a heat dissipation fins radially projecting on the outer circumference of the hollow cylindrical body of the heat-coupled LED tube of the central heat sink It is arranged in the shape of a pillar of an ear which winds up the lead thread while forming a heat dissipation gap at a predetermined interval by being coupled to each heat dissipation fin, and restricting the length of the central heat sink smaller than the length of the LED tube to the inside of the LED lamp. It is to provide an LED lamp having a heat dissipation structure that maximizes air convection irrespective of the installation posture by securing a space that is open in all directions through the heat dissipation gaps to smooth air convection.

Another object of the present invention is a light distribution characteristic of irradiating light in all directions except for the base terminal coupled to the lower socket is coupled to the lamp socket is coupled to the lower portion of the LED tube (for example, 240 ° It is to provide an LED lamp having a beam angle).

Still another object of the present invention is a base coupled to the inside of the converter housing accommodating the AC-DC converter for generating the driving power of the LED mounted on the LED tubes and the lower substrate and the converter housing and to the lamp socket at the end. It is to provide an LED lamp that is fully charged with heat dissipating silicon inside the base housing to which the terminals are fastened.

In order to achieve the object of the present invention as described above, the LED lamp according to the present invention is a heat-conductive plastic (for example, polycarbonate) material, a bar plate mounted with a plurality of LEDs arranged along the length of the rod heat sink is accommodated A plurality of rod-shaped LED tubes coupled; Radiating fins protrude radially on the outer circumference of the hollow cylindrical body, the LED tubes are coupled to each of the radiating fins are arranged and fixed in the shape of a pillar of the winding winding the yarn thread while forming a radiating gap at a predetermined interval, By limiting the length of the LED tube smaller than the length of the LED tube to form a heat dissipation structure to ensure a space for opening the air in all directions through the heat dissipation gaps inside the LED lamp to facilitate the air convection occurs when the LED tube is emitted A central heat sink for dissipating heat; An upper substrate connected to the upper portions of the LED tubes to supply power; An upper heat sink coupled to the upper substrate to emit heat generated when the LED tubes emit light and heat generated by the converter housing; A lower heat sink coupled to the lower portions of the LED tubes to emit heat generated when the LED tubes emit light and heat generated when the LEDs of the lower substrate emit light; A thermal conductive plate made of a thermally conductive plastic (eg, polycarbonate) and coupled to the lower heat sink to conduct heat generated when the LEDs of the lower substrate emit light to the lower heat sink; A lower substrate fixed on the heat conduction plate and having a plurality of LEDs mounted thereon; A lower substrate cover which is made of a thermally conductive plastic (eg, polycarbonate) and is hermetically bonded to the thermal conductive plate to cover the lower substrate, heat dissipation, waterproofing and sealing, and diffuse light emitted by the LEDs of the lower substrate; A converter housing for accommodating an AC-DC converter for generating driving power for the LEDs mounted on the LED tubes and the lower substrate and coupling to the upper heat sink; And a base housing coupled to the converter housing and having a base terminal coupled to a lamp socket at an end thereof.

LED lamp according to the present invention is the heat dissipation and waterproof and sealed by the sealing cap of the lower end of the LED tube, the upper end of the LED tube is filled in the recess in the state accommodated in the recess formed in the upper heat sink It is characterized in that the heat dissipation and waterproof and sealed by the heat dissipation silicon.

The LED lamp according to the present invention is characterized in that the inside of the converter housing and the base housing are completely filled with heat dissipating silicon to be radiated, waterproofed, and sealed.

According to the present invention, the heat generated when the LEDs of the LED tubes and the lower substrate emit light is emitted through a plurality of rod heat sinks, a central heat sink, an upper heat sink, and a lower heat sink in all directions. The heat dissipation maximizes heat dissipation because it facilitates air convection. Especially, the heat dissipation gap between the LED tubes and the inner space of the LED lamps communicates with each other, which maximizes heat dissipation regardless of the installation position of the LED lamp. Can be.

The present invention is excellent in waterproof performance because both the LED tube and the LED of the lower substrate is sealed.

1 is a perspective view of an LED lamp according to the present invention.

2 is an exploded perspective view of FIG.

3 is an exploded perspective view of the LED tube assembly shown in FIG.

4 is a cross-sectional view of the LED tube shown in FIG.

5 is a perspective view showing a state in which the upper end of each substrate of the LED tube is welded to the upper substrate.

6 is a cutaway view showing a state where the inside of the recess of the upper heat sink is filled with heat dissipation silicon;

7 is a cutaway view showing a state in which the inside of the converter housing and the inside of the base housing are completely filled with heat dissipating silicon.

8 is a first embodiment showing a state of use of the LED lamp according to the present invention.

9 is a second embodiment showing the state of use of the LED lamp according to the present invention.

10 is a third embodiment showing the state of use of the LED lamp according to the present invention.

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

1 to 7, the LED lamp 100 according to the present invention includes a plurality of LED tubes 110 having a rod shape, a central heat sink 120, an upper substrate 130, and an upper heat sink 140. , A lower heat sink 150, a heat conduction plate 160, a lower substrate 170, a lower substrate cover 180, a converter housing 190, and a base housing 190a.

LED lamp 100 according to the present invention is the power supply line drawn from the converter housing 190 is the central heat sink 120, the upper substrate 130, the upper heat sink 140, the lower heat sink 150, A plurality of LED tubes 110 and lower substrates 170 connected to the upper substrate 130 and the lower substrate 170 through the heat conduction plate 160 and connected to the upper substrate 130. Supply driving power of LEDs.

The LED tube 110 is made of a thermally conductive plastic (eg, polycarbonate), and includes a bar plate 111 mounted with a plurality of LEDs arranged along a length thereof, and a bar heat sink 112 is coupled thereto.

The LED tube 110 is provided with a reflective sheet (110a) to reflect and diffuse the light emitted by the LED on the inner surface.

The LED tube 110 is formed with a substrate groove 110b for fixing the bar plate 111 inside the rear surface of the LED tube 110 and a heat sink groove 110c for inserting the bar heat sink 112 on the outside of the rear surface of the LED tube 110. ) Is formed.

An upper end of the bar plate 111 is welded to the upper substrate 130 in an exposed state on the upper surface of the upper substrate 130. When the upper end of the bar plate 111 is exposed on the upper surface of the upper substrate 130, the pillar shape of the ear winding the yarn thread along the upper surface of the upper substrate 130 during the LED lamp 100 assembly process The assembly of the LED tube 110, which is disposed and fixed, may be facilitated and the assembly time may be shortened.

The lower end of the LED tube 110 has a convex surface on the outside and heat dissipation, waterproofing and sealing as the sealing cap 110d made of a thermally conductive plastic (eg, polycarbonate) is bonded by ultrasonic bonding.

A part of the outer surface of the sealing cap 110d is formed as a flat portion 110d-1 for providing a space in which the heat conductive plate 160 is disposed. When the flat portion 110d-1 is formed, the heat conduction is applied to the lower heatsink 150 coupled to the lower end of the LED tube 110 to which the sealing cap 110d is bonded during the LED lamp 100 assembly process. When the plate 160 is coupled, the heat conduction plate 160 is caught on a convex surface that is connected to the flat portion 110d-1 of the sealing cap 110d, thereby preventing the detachment. It may be disposed and coupled to the lower heat sink 150.

The bar heat sink 112 is formed on both sides of the projection 112a is fitted into the heat sink groove (110c) formed on the outside of the rear surface of the LED tube 110, the cylindrical ventilation opening one side in the center portion along the length The groove 112b is formed, and the heat dissipation fin 121 of the central heat sink 120 is fitted into the vent groove 112b, and the upper heat sink 140 and the lower heat sink 150 are screwed together. do.

The central heat sink 120 has radially radiating fins 121 protruding from the outer circumference of the hollow cylindrical body, and the distal end of the heat dissipating fin 121 is fitted into the vent groove 112b of the bar heat sink 112. It is fixed.

The central heat sink 120 is arranged and fixed in the shape of a pillar of an ear to wind the lead thread while forming a heat dissipation gap at a predetermined interval by coupling the LED tubes 110 to each heat dissipation fin 121. By limiting the smaller than the length of the LED tube 110 to the inside of the LED lamp 100 through the heat dissipation gaps open in all directions to form a heat dissipation structure to ensure a space for smooth air convection the LED tube ( 110 emits heat generated during light emission.

The length of the central heat sink 120 is limited to the length range of 1/5 to 3/5 of the length of the LED tube 110 in order to form a heat dissipation structure to secure a sufficient space inside the LED lamp 100. Most preferably.

When the length of the center heat sink 120 is less than 1/5 of the length of the LED tube 110, the LED tubes 110 fixed to the heat dissipation fins 121 of the center heat sink 120 are sufficiently supported. There is a drawback to not doing it.

When the length of the center heat sink 120 is greater than 3/5 of the length of the LED tube 110, the LED tubes 110 fixed to the heat dissipation fins 121 of the center heat sink 120 are sufficiently provided. Although it can support, there is a disadvantage that the space formed inside the LED lamp 100 does not facilitate the air convection.

The upper substrate 130 is connected to the upper portions of the LED tubes 110 to supply power, and as described above, a power supply line is connected to supply driving power to the LED tubes 110.

The upper heat sink 140 is coupled to the upper substrate 130 to emit heat generated when the LED tubes 110 emit light and heat generated by the converter housing 190.

The upper heat sink 140 has a central through hole 141 formed therein, and a screw that is fastened to a vent groove 112 b formed in a cylindrical shape having one side open at a central portion thereof along the length of the rod heat sink 112. Screw bosses 142 are formed at predetermined intervals along the edge of the central through hole 141.

The upper heat sink 140 has a predetermined depth between each upper end of the upper substrate 130 and the LED tubes 110 between the center through hole 141 and the edge of the side surface coupled with the upper substrate 130. The recessed part 143 accommodated is formed.

The upper heat sink 140 is the inside of the concave portion 141 is completely filled with heat dissipation silicon is heat dissipation, waterproof and sealed treatment.

The upper heat sink 140 has heat dissipation fins 144 protruding from the side opposite to the upper substrate 130.

The lower heat sink 150 is coupled to the lower portions of the LED tubes 110 to emit heat generated when the LED tubes 110 emit light and heat generated when the LEDs of the lower substrate 170 emit light.

The lower heat sink 150 has a central through hole 151 formed therein, and a screw fastened to a vent groove 112 b formed in a cylindrical shape having one side open at a central portion thereof along the length of the rod heat sink 112. Screw holes 152 are formed at predetermined intervals along the edge.

The lower heat sink 150 has heat dissipation fins 153 protruding from the side surfaces of the lower heat sink 150.

The lower heatsink 150 has screw bosses 154 to which screws for coupling the heat conduction plate 160 are protruded at predetermined intervals on opposite sides coupled with the LED tubes 110.

The thermal conductive plate 160 is made of a thermally conductive plastic (eg, polycarbonate) and is coupled to the lower heat sink 150 to transfer heat generated when the LEDs of the lower substrate 170 emit light to the lower heat sink 150. Evangelize.

The lower substrate 170 is fixed on the heat conduction plate 160 and has a plurality of LEDs mounted thereon.

The lower substrate cover 180 is made of a thermally conductive plastic (eg, polycarbonate) and is hermetically bonded to the thermal conductive plate 160 by ultrasonic bonding to cover the lower substrate 170, and to radiate, waterproof, and seal the lower substrate. The LEDs of the substrate 170 diffuse the light emitted.

The lower substrate cover 180 has a convex surface on the outside thereof, and the concave portion 181 formed at the center thereof emits light emitted from the LEDs of the lower substrate 170 such that the light spots of the LEDs of the lower substrate 170 are not visible. Focus and spread to prevent glare.

The converter housing 190 accommodates an AC-DC converter that generates driving power for the LEDs mounted on the LED tubes 110 and the lower substrate 170 and is coupled to the upper heat sink 140.

The base housing 190a is coupled to the converter housing 190 and the base terminal 191a coupled to the lamp socket at the end is fastened.

The lamp socket is a socket to which the base terminal 191a is coupled in a screw manner, and may be easily understood to those skilled in the art without exemplifying a specific structure.

The inside of the converter housing 190 and the inside of the base housing 190a are completely filled with heat-dissipating silicon to be heat-dissipated, waterproofed, and sealed.

The converter housing 190 and the base housing 190a are preferably screwed together. For example, they are coupled to each other by screws passing through a screw hole (not shown) of the converter housing 190 and a screw boss (not shown) of the base housing 190a.

The screw penetrating the screw hole (not shown in the drawing identification number) of the converter housing 190 protrudes along with the heat dissipation fins 144 on the opposite side that is coupled to the upper substrate 130 of the upper heat sink 140. The converter housing 190 is coupled to the upper heatsink 140 by being fastened to a screw boss (not shown).

LED lamp 100 according to the present invention configured as described above operates as follows.

As the base terminal 191a of the LED lamp 100 is coupled to the lamp socket, when AC power is applied to the AC-DC converter inside the converter housing 190, the AC-DC converter is connected to the AC. The power is converted into a driving power of a plurality of LEDs mounted on the plurality of LED tubes 110 and the lower substrate 170 to the plurality of LED tubes 110 and the lower substrate 170 through the power supply line. It is supplied by a plurality of mounted LEDs.

Accordingly, when a plurality of LEDs mounted on the plurality of LED tubes 110 and the lower substrate 170 emit light, the LED lamp 100 except for the base terminal 101 coupled to the lamp socket. The light was radiated in all the remaining directions, and the measured light distribution showed a beam angle of more than 240 °.

As described above, the heat generated while the plurality of LEDs mounted on the plurality of LED tubes 110 and the lower substrate 170 emit light is the plurality of bar heat sinks 112 and the center heat sinks 120, It is discharged through the upper heat sink 140, and the lower heat sink 150.

At this time, the heat emitted through the plurality of rod heat sink 112, the central heat sink 120, the upper heat sink 140, and the lower heat sink 150 is formed in the interior of the LED lamp 100 In the LED lamp 110 is discharged out of the LED lamp 100 by the air convection smoothly made in all directions through the heat dissipation gap formed between the LED tube (110).

In addition, the heat generated by the AC-DC converter inside the converter housing 190 when the LED lamp 100 emits light may be caused by the heat dissipation silicon completely charged in the converter housing 190. Is conducted and released.

As such, the LED lamp 100 according to the present invention has a heat dissipation structure formed between the LED tube 110 and the inner space of the LED lamp 100 through the heat dissipation structure and the installation posture of the LED lamp 100 and Regardless of the heat dissipation can be maximized.

8 is an embodiment showing the use state of the LED lamp 100 is installed so that the irradiation direction of light toward the ground. As shown in FIG. 8, as shown by arrows, air convection is smoothly performed by heat dissipation structures in which the inner spaces of the LED lamp 100 communicate with each other, thereby maximizing heat dissipation generated when the LED lamp 100 emits light. It can be seen that.

9 is an embodiment showing the use state of the LED lamp 100 is installed so that the irradiation direction of light toward the horizontal line. As shown in FIG. 9, as shown by arrows, air convection is smoothly performed by heat dissipation structures in which the inner spaces of the LED lamp 100 communicate with each other, thereby maximizing heat dissipation generated when the LED lamp 100 emits light. It can be seen that.

10 is an embodiment showing the use state of the LED lamp 100 is installed so that the light irradiation direction toward the ground. As shown in FIG. 10, air convection is smoothly performed by the heat dissipation structure in which the inner spaces of the LED lamp 100 communicate with each other, thereby maximizing heat dissipation generated when the LED lamp 100 emits light. It can be seen that.

The LED lamp according to the present invention described above is not limited to the above-described embodiment, and anyone having ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention as claimed in the following claims. The technical spirit is to the extent that various modifications can be made.

[Description of the code]

100: LED lamp 110: LED tube

110a: reflective sheet 110b: substrate groove

110c: heat sink groove 110d: sealing cap

110d-1: flat part 111: bar plate

112: heat sink 112a: protrusion

112b: ventilation groove 120: central heat sink

121: heat dissipation fin 130: upper substrate

140: upper heat sink 141: central through hole

142: threaded boss 143: recess

144: heat sink fin 150: lower heat sink

151: central through hole 152: screw hole

153: heat sink fin 154: threaded boss

160: heat conduction plate 170: lower substrate

180: lower substrate cover 181: recessed portion

190: converter housing 190a: base housing

191a: Base terminal

Claims

A plurality of LED tubes 110 having a rod shape in which a bar plate 111 on which a plurality of LEDs mounted along a length of the heat conductive plastic material and arranged along the length is accommodated and the bar heat sink 112 is coupled;

Radial fins protruding from the outer circumference of the hollow cylindrical body radially, and the LED tube 110 is coupled to each of the radiating fins 121 to form a heat dissipation gap at a predetermined interval, winding the thread of the lead rim ( It is arranged and fixed in a pillar shape, the length is limited to less than the length of the LED tube 110 to open in all directions through the heat dissipation gap inside the LED lamp 100 to facilitate the air convection space A central heat sink 120 for dissipating heat generated when the LED tubes 110 emit light by forming a heat dissipation structure to secure the heat dissipation structure;

An upper substrate 130 connected to the upper portions of the LED tubes 110 to supply power;

An upper heat sink 140 coupled to the upper substrate 130 for dissipating heat generated when the LED tubes 110 emit light and heat generated by the converter housing 190;

A lower heat sink 150 coupled to the lower portions of the LED tubes 110 to emit heat generated when the LED tubes 110 emit light and heat generated when the LEDs of the lower substrate 170 emit light;

A thermally conductive plastic material and coupled to the lower heat sink 150 to conduct heat generated when LEDs of the lower substrate 170 emit light to the lower heat sink 150;

A lower substrate 170 fixed on the heat conduction plate 160 and mounted with a plurality of LEDs;

It is a thermally conductive plastic material and is sealed to the thermal conductive plate 160 by ultrasonic bonding method to cover the lower substrate 170, heat dissipation, waterproofing and sealing treatment, the lower portion to diffuse the light emitted by the LEDs of the lower substrate 170 A substrate cover 180;

A converter housing (190) for accommodating an AC-DC converter for generating driving power for the LED mounted on the LED tubes (110) and the lower substrate (170) and coupled to the upper heat sink (140); And

A base housing 190a coupled to the converter housing 190 and having a base terminal 191a coupled to a lamp socket at an end thereof;

LED lamp, characterized in that consisting of.
According to claim 1, wherein the LED tube 110 is provided with a reflecting sheet (110a) to reflect and diffuse the light emitted by the LED on the inner surface, the substrate groove for fixing the bar plate 111 by inserting the inside of the rear surface (110b) is formed, and the heat sink groove (110c) for fixing the rod heat sink (112) by inserting the outer side of the rear surface is formed LED lamp.
The LED lamp of claim 1, wherein an upper end of the bar board is welded to the upper board in a state where the upper end of the bar board is exposed on the upper surface of the upper board.
According to claim 1, wherein the lower end of the LED tube 110 is a heat dissipation and waterproofing and sealing treatment as the sealing cap (110d) of the outer surface is convex surface shape and the thermally conductive plastic is bonded by ultrasonic bonding method, the sealing Part of the outer surface of the cap (110d) LED lamp, characterized in that formed by the flat portion (110d-1) to provide a space in which the heat conducting plate 160 is disposed.
According to claim 1, The bar heat sink 112 is formed on both sides of the projection (112a) to be fitted to the heat sink groove 110c formed on the outside of the rear surface of the LED tube 110, the central portion along the length The cylindrical vent groove 112b having one side open is formed, and the heat dissipation fin 121 of the central heat sink 120 is fitted into the vent groove 112b to be fixed and the upper heat sink 140 and the lower heat sink. LED lamp, characterized in that 150 is screwed.
According to claim 1, wherein the length of the central heat sink 120 is limited to the length range of 1/5 to 3/5 of the length of the LED tube 110 through all the heat dissipation gaps in the interior of the LED lamp LED lamp, characterized in that to secure a space that is open to smooth air convection.
According to claim 1, The upper heat sink 140 has a central through hole 141, the ventilation groove 112b formed in a cylindrical shape with one side open to the center portion along the length of the rod heat sink 112 Screw bosses 142 through which screws are fastened to each other are formed at predetermined intervals along the edges of the central through holes 141, and the central through holes of the side surfaces engaging with the upper substrate 130 ( A recess 143 is formed between each of the upper substrate 130 and the LED tubes 110 at a predetermined depth between the edges 141 and the edges, and the inside of the recess 141 is formed on the heat dissipating silicon. Fully charged by the heat dissipation, waterproof and sealed treatment, LED lamp, characterized in that the heat dissipation fins (144) protruding on the opposite side coupled to the upper substrate (130).
According to claim 1, The lower heat sink 150 has a central through-hole 151 is formed, the ventilation groove 112b formed in a cylindrical shape with one side open to the center portion along the length of the rod heat sink 112 The screw holes 152 through which the screw is fastened to each other are formed at predetermined intervals along the edge, and the heat dissipation fins 153 protrude from the side surfaces of the LED tube 110 to be coupled to the LED tubes 110. LED boss, characterized in that the boss boss (154) to which the screw for coupling the heat conduction plate 160 is protruded at predetermined intervals on the opposite side to be coupled to each other.
According to claim 1, wherein the lower substrate cover 180 has a convex surface of the outer surface and the concave portion 181 formed in the center portion of the lower substrate 170 so that the light spot of each LED of the lower substrate 170 is not visible LED lamp, characterized in that to prevent glare by focusing and diffusing the light emitted by the LEDs.
The LED lamp according to claim 1, wherein the inside of the converter housing (190) and the inside of the base housing (190a) are completely filled with heat-dissipating silicon, and are heat-dissipated, waterproofed, and sealed.