KR20180126977A - Led light device - Google Patents

Abstract

The present invention relates to an LED lighting device which has a space securing protrusion unit protruding to be separated by a set distance on an outer surface along a circumferential direction of a cover ring to be connected to an inner surface on one side of a housing in order to control the quantity and the speed of external air introduced through an external air inlet formed between the inner surface of the housing and a circumferential surface of the cover ring. Therefore, the heat radiation efficiency can be maximized by increasing an opening degree of an inflow side of the external air to cool, with air, a heat sink installed inside the housing of the LED lighting device, and increasing a contact area with the external air by forming a heat radiation fin of the heat sink in a flow direction of the external air unlike the existing technology.

Description

{LED LIGHT DEVICE}

The present invention relates to an LED lighting apparatus, and more particularly, to an LED lighting apparatus that increases the degree of opening of an outside air inflow side in order to air-cool a heat sink provided inside a housing of an LED lighting apparatus, So that the heat radiation efficiency can be maximized by increasing the contact area with the outside air.

LEDs are attracting a great deal of attention in recent years because they are small in size, capable of emitting light at a low voltage, have a long lifetime and consumed less power than other light sources, and have various excellent features.

On the other hand, since LEDs are vulnerable to heat, the brightness and lifespan of LEDs are shortened if the heat generated by light emission is not properly cooled. Therefore, most LEDs have heat sinks for cooling the heat.

However, most LED lights have a light source at the lower part of the light body and a heat sink at the upper part of the light source. However, since the inside of the LED light body is blocked, air convection for cooling the heat sink is not properly performed Cooling is not performed.

In order to solve such a problem, most of the LED lighting apparatuses are exposed to the outside of the body of the heat sink, or a plurality of air inlets are formed on the side of the body for housing the heat sink so that outside air flows through the air inlets on the side of the body, To cool the sink.

As a conventional technology related to an LED lighting apparatus, Korean Patent Registration No. 1462011 (titled "LED invention having a forced convection structure") is disclosed.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

The conventional LED lighting apparatus has a complicated shape in which a large number of heat dissipation fins are formed when the heat sink is exposed to the outside, so that the external appearance is insufficient, and dust and foreign matter are deposited on the heat sink, thereby lowering the cooling efficiency.

In addition, the conventional LED lighting apparatus has a property that the hot air rises in the vertical direction due to the difference in density. However, since the air inlet is formed on the side of the body, the convection of air is not smoothly performed.

In addition, the conventional LED lighting apparatus has a problem that the cooling efficiency is lowered because the inflow amount of air for air cooling is small.

Therefore, there is a need to improve this.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an LED lighting apparatus for increasing an opening degree of an inflow side of an outside air in order to air-cool a heat sink provided inside a housing of an LED lighting apparatus. have.

It is another object of the present invention to provide an LED lighting fixture that maximizes heat dissipation efficiency by forming a long heat dissipating fin in the flow direction of the outside air to increase the contact area with the outside air.

The present invention further improves the cooling efficiency by delaying the contact time between the outside air and the heat sink by structurally improving the amount of the outside air discharged after passing through the heat sink than the amount of the outside air flowing into the heat sink inflow side And an object of the present invention is to provide an LED lighting apparatus to be used.

An LED lighting apparatus according to the present invention comprises: a housing having both sides opened along an axial direction; An LED light source unit which is exposed to an open side of the housing and is emitted by a power source; A heat sink disposed inside the housing, the heat sink being connected to the LED light source to guide heat generated from the LED light source; A cap having a heat dissipating outlet for sealing the other open side of the housing while connecting the heat sink and allowing the discharge of air to guide heat dissipation; A ring-shaped cover ring for fixing the LED light source unit to the inside; And a plurality of protrusions protruding at a predetermined distance from the outer surface along the circumferential direction of the cover ring so as to adjust the amount and speed of the outside air introduced through the outside air inlet formed between the circumferential surface of the covering and the inner surface of the housing, And a space securing protrusion connected to one inner surface.

The housing defining an engaging groove for engaging the space securing protrusion; The depth of the engagement groove may be smaller than the height of the space securing protrusion.

Wherein the heat sink includes a radiating fin disposed to be spaced apart along the circumferential direction at regular intervals and arranged in parallel to guide the flow of the outside air; Wherein the heat radiating fin includes a plurality of main pins arranged along a circumferential direction and sub pins which are branched by a pair at each of the main pins to increase a contact area with outside air; The heat dissipation outlet may be disposed in the cap so as to correspond to a space between a pair of the sub pins extending from one main fin.

As described above, the LED lighting apparatus according to the present invention improves the air-cooling efficiency of the heat sink provided inside the housing of the LED lighting apparatus by increasing the opening degree of the inflow side of the outside air unlike the prior art.

In addition, the present invention can maximize the heat radiation (air cooling) efficiency by forming the heat dissipating fin of the heat sink to be long in the flow direction of the outside air to increase the contact area with the outside air.

The present invention further improves the cooling efficiency by delaying the contact time between the outside air and the heat sink by structurally improving the amount of the outside air discharged after passing through the heat sink than the amount of the outside air flowing into the heat sink inflow side can do.

1 is a perspective view of an LED lighting device according to an embodiment of the present invention.
2 is a bottom perspective view of an LED lighting device according to an embodiment of the present invention.
3 is an exploded perspective view of the LED lighting apparatus according to the embodiment of the present invention.
4 is an exploded bottom perspective view of the LED lighting apparatus according to the embodiment of the present invention.
5 is a plan view of an LED lighting device according to an embodiment of the present invention.
6 is a rear elevation view of an LED lighting device according to an embodiment of the present invention.
7 is an exploded view of an LED lighting device according to an embodiment of the present invention.
8 is a cross-sectional view of an LED lighting device according to an embodiment of the present invention.

Hereinafter, an embodiment of an LED lighting apparatus according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view of an LED lighting device according to an embodiment of the present invention, and FIG. 2 is a bottom perspective view of an LED lighting device according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view of the LED lighting apparatus according to an embodiment of the present invention, and FIG. 4 is an exploded bottom perspective view of the LED lighting apparatus according to the embodiment of the present invention.

FIG. 5 is a plan view of an LED lighting device according to an embodiment of the present invention, and FIG. 6 is a rear view of a main part of an LED lighting device according to an embodiment of the present invention.

FIG. 7 is an exploded view of an LED lighting device according to an embodiment of the present invention, and FIG. 8 is a sectional view of an LED lighting device according to an embodiment of the present invention.

1 to 8, an LED lighting apparatus 100 according to an exemplary embodiment of the present invention includes a housing 110, an LED light source 120, a heat sink 130, a cap 140, a covering 150, And a space securing protrusion 160.

The housing 110 forms an empty space therein to receive the cover 150 having the LED light source 120, the heat sink 130, the cap 140 and the space securing protrusion 160 inside. In addition, the housing 110 is formed to open on both sides along the axial direction. Thus, the housing 110 is formed in a pipe shape. Of course, the housing 110 can be deformed into various shapes, and can be deformed into various shapes in cross section.

In addition, the LED light source unit 120 is provided to be exposed to one side of the opening of the housing 110 to emit light by a power source and illuminate the LED light source unit. In particular, the LED light source unit 120 may include an LED (not shown) that is recently attracting attention due to features such as low power consumption, small size, and long life, and a reflector 122 that condenses light emitted from the LED.

Of course, the LED light source 120 may have various configurations for applying the LED.

The heat sink 130 is disposed inside the housing 110 while being connected to the LED light source 120 to guide heat generated by the LED light source 120, particularly LED.

At this time, the heat sink 130 may simply touch the LED light source unit 120 to receive heat from the LED light source unit 120, or may be tied to the LED light source unit 120. The heat sink 130 is disposed adjacent to the LED light source 120 along the axial direction of the housing 110 and can be forcedly inserted into the housing 110.

In addition, the housing 110 may form a support jaw 114 for positioning the heat sink 130. Of course, the support jaw 114 can be deformed into various shapes.

In particular, the heat sink 130 includes a core 132 for receiving as much heat as possible from the LED light source 120, and a radiating fin 134 disposed radially on the circumferential surface of the core 132, . ≪ / RTI >

That is, the radiating fins 134 are arranged at regular intervals along the circumferential direction on the circumferential surface of the core 132, and arranged to guide the flow of the outside air. Accordingly, the heat dissipation fins 134 are disposed in parallel to the flow direction of the ambient air so that the ambient air introduced into the housing 110 is conveyed along the axial direction of the housing 110. Of course, the core 132 and the radiating fin 134 are made of a material excellent in heat radiation and conductivity.

At this time, the radiating fin 134 includes a main fin 136 and a sub fin 138.

The main fin 136 is spaced apart from the circumferential surface of the core 132 by a predetermined distance along the circumferential direction. The main fin 136 is elongated in the flow direction of the outside air, that is, the axial direction of the housing 110. Of course, the thickness, height, and length of the main fin 136 can be variously set according to the amount of heat dissipation and the material.

The sub fin 138 branches into a pair at each of the main pins 136 to increase the contact area with the outside air. In particular, the radiating fin 134 formed of the lower main fin 136 and the upper sub fin 138 may have a substantially Y shape. Of course, the pair of sub-pins 138 may be formed in a U-shape.

In addition, since the radiating fin 134 is composed of the main fin 136 and the sub fin 138, since the passage of the outside air is increased, the outside air is conveyed stably in a straight line, so that noise generation due to the transfer of the outside air is prevented .

The cap 140 connects the heat sink 130 and closes the other open side of the housing 110 and forms a heat dissipation outlet 142 to guide the heat dissipation by permitting the discharge of air.

The cap 140 is detachably coupled to the other side of the housing 110 to prevent the heat sink 130 and the LED light source 120 from being separated from the other side of the housing 110.

In particular, the cap 140 is firmly coupled to the housing 110 by the fastening member 144. Of course, the fastening member 144 can couple the housing 110 and the cap 140 by various methods or various structures. Here, the fastening member 144 may be variously applied to a bolt, a screw, or the like.

The cap 140 is firmly coupled to the housing 110 by the fastening member 144 so that the cap 140 can be firmly connected to any fixture (not shown). Accordingly, the LED lighting apparatus 100 can be fixedly suspended from a ceiling or the like.

In addition, the cap 140 forms a heat dissipation outlet 142 for discharging the outside air that has passed through the heat dissipation fin 134 of the heat sink 130.

The heat dissipation outlet 142 is disposed in the cap 140 so as to coincide with the passage of the outside air between the main fin 136 and the main fin 136 and between the sub pin 138 and the sub fin 138. [ That is, the heat dissipation outlet 142 has a space between the pair of sub pins 138 extending from one main fin 136 and a space between the main fin 136 and the main fin 136, 140).

Accordingly, the outside air containing the heat transferred along the heat radiating fin 134 of the heat sink 130 is discharged through the heat discharging outlet 142 while maintaining the straightness, so that the outside air is smoothly exhausted, . Of course, the number and the size of the heat discharging outlet 142 are not limited.

In addition, the cap 140 may be fixedly connected to a power source board 146 for supplying power to the LED of the LED light source unit 120. The power source board 146 is connected to the heat sink 130 via the LED 140. When the power source board 146 is assembled inside the housing 110 with the cap 140, the power source board 146, the heat sink 130 and the LED light source 120 arranged in order, And may function to press-fix the light source unit 120 side. Of course, the power supply board 146 can be modified into various shapes.

The cover 150 is ring-shaped so as to fix the LED light source 120 on the inner side, and is fixedly connected to the inside of the housing 110. Thus, the cover 150 serves to connect and fix the LED light source unit 120 to the housing 110.

In particular, the covering 150 may be fixedly secured to the reflector 122 or may be bound to the reflector 122 in a variety of ways. Of course, the covering 150 can be made of various materials.

The cover 150 is formed to be equal to the inner circumferential trajectory of the housing 110 and is formed to be smaller than the inner side diameter (size) of the housing 110.

In addition, the space securing protrusion 160 is spaced a predetermined distance in the circumferential direction on the circumferential surface of the cover ring 150.

The space securing protrusions 160 are detachably coupled to inner surfaces of one side of the housing 110, respectively. To this end, the housing 110 forms the engaging groove 112 to engage with the space securing protrusion 160. At this time, the shape of the coupling groove 112 is variously applied.

The cover 150 assembled with the LED light source unit 120 is assembled to one side of the inside of the housing 110 and the heat sink 130 is disposed inside the housing 110 so as to contact the rear side of the LED light source unit 120 The power source board 146 presses the heat sink 130 toward the LED light source unit 120 as the cap 140 having the power source board 146 is bound to the other inner side surface of the housing 110. Therefore, The LED light source unit 120 and the heat sink 130 are fixed to the inside of the housing 110.

The depth T1 of the engaging groove 112 is smaller than the height T2 of the space securing protrusion 160. (T1 <T2)

The outer air inlet 162 is formed between the circumferential surface of the covering 150 and the inner surface of the housing 110. Particularly, in order for the outside air inflow port 162 to allow sufficient outside air to flow into the housing 110, the space between the space securing protrusions 160 in the circumferential direction is spaced by a set distance. To this end, the space securing protrusions 160 are arranged to be spaced a certain distance in the circumferential direction from the circumferential surface of the cover ring 150.

As a result, the amount of the outside air introduced into the housing 110 through the outside air inlet 162 is increased, and the space between the space maintaining protrusions 160 is wider, so that the speed of entering the inside of the housing 110 is reduced, Due to the increase in the residence time inside the housing 110, the contact time of the outside air with the heat sink 130 is increased.

Further, as the outside air is guided along the straight line through the heat discharging outlet 142, the heat radiation efficiency of the heat sink 130 is further improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

100: LED lighting device 110: housing
112: coupling groove part 120: LED light source part
130: heat sink 134:
136: Main pin 138: Sub pin
140: cap 142: heat discharging outlet
146: Power board 150: Covering
160: Space securing protrusion 162: Outer air inlet

Claims (3)

A housing having both sides opened along the axial direction;
An LED light source unit which is exposed to an open side of the housing and is emitted by a power source;
A heat sink disposed inside the housing, the heat sink being connected to the LED light source to guide heat generated from the LED light source;
A cap having a heat dissipating outlet for sealing the other open side of the housing while connecting the heat sink and allowing the discharge of air to guide heat dissipation;
A ring-shaped cover ring for fixing the LED light source unit to the inside; And
And a protrusion protruding at a predetermined distance from the outer surface along the circumferential direction of the cover ring so as to adjust the amount and speed of the outside air introduced through the outside air inlet formed between the circumferential surface of the covering and the inner surface of the housing, And a space securing protrusion connected to an inner surface of the light guide plate.
The method according to claim 1,
The housing defining an engaging groove for engaging the space securing protrusion;
And the depth of the engagement groove portion is smaller than the height of the space securing protrusion.
The method according to claim 1,
Wherein the heat sink includes a radiating fin disposed to be spaced apart along the circumferential direction at regular intervals and arranged in parallel to guide the flow of the outside air;
Wherein the heat radiating fin includes a plurality of main pins arranged along a circumferential direction and sub pins which are branched by a pair at each of the main pins to increase a contact area with outside air;
Wherein the heat dissipation outlet is disposed in the cap so as to correspond to a space between a pair of sub pins extending from one main fin.

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