KR102263962B1 - Heat sink apparatus for led lighting apparatus - Google Patents

Abstract

Disclosed is a heat sink device for an LED lighting device. According to one aspect of the present invention, provided is the heat sink device for the LED lighting device comprising: a main body through which the heat generated from an LED element is conducted by being coupled to a substrate on which the LED element is mounted; a plurality of heat dissipation fins formed to be spaced apart from each other on the main body to dissipate heat conducted from the main body to the outside; a circulation passage formed in the main body so that external air can circulate in and out of the main body; an exhaust hole formed in at least one of the circulation passages; and an exhaust pipe that is coupled to the exhaust hole so as to be connected to the circulation passage and discharges the air heated by the main body to the outside. Therefore, the present invention is capable of allowing heat generated from the LED element to be dissipated to the outside.

Description

Heat sink mechanism for LED lighting fixtures {HEAT SINK APPARATUS FOR LED LIGHTING APPARATUS}

The present invention relates to a heat sink mechanism for an LED lighting fixture.

In general, a lighting device refers to a device that adjusts brightness by reflecting, refracting, or transmitting light of a light source and fixing or protecting the light source. These lighting fixtures may be classified into indirect lighting fixtures, semi-indirect lighting fixtures, total diffusion lighting fixtures, semi-direct lighting fixtures, and direct lighting fixtures according to light distribution.

Recently, as countries around the world focus on green growth, an eco-friendly luminescent diode (LED) that saves energy is in the spotlight as a light source. LEDs have the advantages of low power consumption, long lifespan, and small size compared to existing light sources, and are widely used in LCD backlights, electric signs, fluorescent lamps, automobile brakes or turn signals, street lamps, various electronic product indicators, and flashing lights on ships and aircraft. is being utilized

LED lighting fixtures implemented with such LEDs have very good performance, but on the other hand, if the heat generated from the LED is not properly discharged, the LED or its driving circuit may deteriorate and the lifespan may be shortened.

Republic of Korea Public Utility Model Publication No. 20-2013-0004547 (2013.07.23.)

An object of the present invention is to provide a heat sink mechanism for an LED lighting device capable of dissipating heat generated from an LED element to the outside by using a plurality of heat radiation fins, a circulation passage, and an exhaust pipe.

According to one aspect of the present invention, the LED element is coupled to the board on which the LED element is mounted to conduct heat generated from the main body, a plurality of heat dissipation fins formed to be spaced apart from each other in the main body to radiate the heat conducted from the main body to the outside; An exhaust pipe coupled to the exhaust hole to be connected to the circulation passage and the exhaust hole formed in at least one of the circulation passage formed in the main body so that outside air can circulate in and out of the main body, and the circulation passage, to discharge the air heated by the main body to the outside There is provided a heat sink mechanism for LED lighting equipment comprising a.

The circulation passage is formed through the main body so as to extend from one outer surface of the main body to the other outer surface of the main body, and the circulation passage is introduced into the main body and an exhaust hole is formed so that the air heated by the main body is discharged to the outside. may include an auxiliary passage formed in the main body to be circulated in and out of the main body.

The main passage may include a first passage extending from the outer surface of the main body to the inside of the main body, and a second passage connected to the first passage and having an inner diameter narrower than that of the first passage.

The first passage is formed in plurality, any one of the plurality of first passages is connected to one outer surface of the main body, the other of the plurality of first passages is connected to the other outer surface of the main body, and the second passage is connected to the plurality of first passages. 1 is interposed between the passages, and may be connected to the exhaust hole.

The second passage may be formed to have a central inner diameter narrower than both ends.

One end of the auxiliary passage may be formed to have a narrower inner diameter than the other end of the auxiliary passage.

One end of the exhaust pipe may be coupled to the exhaust hole, and one end of the exhaust pipe may have a narrower inner diameter than the other end of the exhaust pipe.

The heat sink mechanism for LED lighting fixtures may further include a heat radiation member installed on the body to radiate heat conducted from the body to the outside.

The heat sink mechanism for the LED lighting device may further include an insertion hole formed inside the body, and the heat dissipation member may be disposed such that one end is inserted into the insertion hole and the other end extends to the outside of the body.

The heat dissipation member may be formed in plurality and may be disposed to be spaced apart from each other with respect to the exhaust pipe.

According to the present invention, heat generated from the LED device may be radiated to the outside by using a plurality of heat dissipation fins, a circulation passage, an exhaust pipe, and a heat dissipation member.

1 is a perspective view showing a heat sink mechanism for an LED lighting fixture and an LED lighting fixture according to an embodiment of the present invention.
Figure 2 is a perspective view showing a heat sink mechanism for LED lighting fixtures according to an embodiment of the present invention.
Figure 3 is a cross-sectional view showing a heat sink mechanism for LED lighting fixtures according to an embodiment of the present invention.
Figure 4 is a view showing a circulation passage of the heat sink mechanism for LED lighting fixtures according to an embodiment of the present invention.
5 is a view showing a heat sink mechanism for LED lighting equipment according to an embodiment of the present invention.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, in the contact relationship between each component, the term "coupling" does not mean only the case where each component is in direct physical contact with each other, but another component is interposed between each component, so that the component is in the other component. It should be used as a concept that encompasses even the cases in which each is in contact.

Hereinafter, an embodiment of the heat sink mechanism 100 for an LED lighting device according to the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals. and a redundant description thereof will be omitted.

The heat sink mechanism 100 for the LED lighting device of this embodiment is coupled to the substrate 10 on which the LED device 20 is mounted, and the body 110 through which heat is conducted from the LED device 20, coupled to the outer surface of the body 110 A plurality of heat dissipation fins 130 formed to be spaced apart from each other in order to dissipate heat conducted to the body 110 to the outside, and a circulation passage 120 formed in the body 110 so that external air can circulate into the body 110 inside. , the exhaust hole 112 formed in at least one of the circulation passages 120 and the exhaust for discharging the air heated by the main body 110 to the outside by being coupled to the exhaust hole 112 so as to be connected to the circulation passage 120 . It may include a pipe 140 .

In this embodiment, the heat conducted to the body 110 can be radiated to the outside by using the plurality of heat dissipation fins 130, the circulation passage 120, the exhaust pipe 140, and the heat dissipation member 150, so that the LED element ( 20), it is possible to prevent the failure of LED lighting fixtures caused by heat generation. Furthermore, it is possible to indirectly increase the lifespan of the LED lighting equipment by increasing the heat dissipation efficiency of the LED lighting equipment.

Hereinafter, each configuration of the heat sink mechanism 100 for LED lighting fixtures according to this embodiment will be described in more detail with reference to FIGS. 1 to 5 .

1 to 5 , the body 110 may be coupled to the substrate 10 on which the LED device 20 is mounted to receive heat generated from the LED device 20 . Here, the LED element 20 refers to a light emitting diode, and heat may be generated as light is generated.

Heat generated by the LED element 20 may be conducted to the substrate 10 mounted on the LED element 20 and to the body 110 coupled to the substrate 10 . As such, the main body 110 receives heat generated from the LED element 20 and radiates it to the outside, thereby preventing damage to the LED element 20 and the substrate 10 due to heat.

Meanwhile, as shown in FIG. 1 , the housing 30 may cover the substrate 10 on which the LED element 20 is mounted, and is made of a material through which light generated from the LED element 20 can pass. can

2 and 3 , the plurality of heat dissipation fins 130 may be formed to be spaced apart from each other in the body 110 in order to radiate heat conducted from the body 110 to the outside. Here, the plurality of heat dissipation fins 130 are formed to be spaced apart from each other on the outer surface of the body 110 to receive heat from the body 110 , and since the plurality of members are disposed to be spaced apart from each other, the contact area with the outside air is increased to dissipate heat. Efficiency can be increased.

In addition, as shown in FIGS. 3 and 5 , protrusions 132 may be formed on the outer peripheral surface of the plurality of heat dissipation fins 130 to increase the contact area with the outside air.

A different amount of heat may be conducted to the body 110 according to the arrangement of the LED element 20 , and accordingly, the plurality of heat dissipation fins 130 may be formed in a different arrangement. For example, as shown in FIG. 3 , in the plurality of heat dissipation fins 130 , a larger number of heat dissipation fins 130 may be disposed in a portion where heat is transmitted from the main body 110 .

In addition, as shown in FIG. 3 , the plurality of heat dissipation fins 130 may have different heights to facilitate circulation of external air between the respective heat dissipation fins 130 .

2 to 4 , the circulation passage 120 may be formed inside the main body 110 so that external air can circulate into the main body 110 . In addition, an exhaust hole 112 may be formed in at least one of the circulation passages 120 , and an exhaust pipe 140 for discharging air heated by the body 110 to the outside is coupled to the exhaust hole 112 . can be

More specifically, as shown in Figures 2 to 4, the circulation passage 120 may be formed through the body 110 so as to extend from the outer surface of one side of the body 110 to the outer surface of the other side of the body 110, and , the circulation passage 120 is introduced into the main body 110, the main passage 121 in which the exhaust hole 112 is formed so that the air heated by the main body 110 is discharged to the outside, and the outside air inside and outside the main body 110 It may include an auxiliary passage 122 formed in the body 110 so as to be circulated to the furnace.

As shown in FIG. 4 , the main passage 121 is connected to the first passage 125 and the first passage 125 extending from the outer surface of the main body 110 into the main body 110 and the first passage 125 . ) may include a second passage 126 formed narrower than the inner diameter.

In addition, as shown in (a) of Figure 4, the first passage 125 is formed in plurality, any one of the plurality of first passages 125 is connected to the outer surface of one side of the body 110, the plurality The other of the first passages 125 may be connected to the other outer surface of the body 110 , and the second passage 126 may be interposed between the plurality of first passages 125 .

In other words, the main passage 121 is a first passage 125 is formed from the outer surface of one side of the main body 110, and then a second passage 126 having a narrower inner diameter than the first passage 125 is connected, and also the second The passage 126 and the first passage 125 connected to the outer surface of the other side of the main body 110 are connected to each other to form a circulation passage 120 whose inner diameter narrows from one side to the other side of the main body 110 and then widens again. can be

In addition, as shown in (a) of Figure 4, here the second passage 126 may be connected to the exhaust hole 112, the second passage 126 may be formed to have a narrower inner diameter in the center than both ends. .

Here, the air passing through the main passage 121 may receive heat emitted from the main body 110 , and accordingly, a pressure difference with the outside may occur. Accordingly, the air heated by the body 110 may be discharged to the outside along the exhaust pipe 140 coupled to the second passage 126 by a stack effect.

Due to this chimney effect, the air inside the main passage 121 may be discharged along the exhaust pipe 140 , and accordingly, the air pressure inside the main passage 121 is lowered, so that outside air flows in from the outside along the main passage 121 . can be

In addition, the air flow rate may be changed according to a difference in inner diameters of the first passage 125 and the second passage 126 . More specifically, the velocity V2 of the air in the second passage 126 may be faster than the velocity V1 of the air in the first passage 125 , thereby improving the air convection velocity.

Here, the air flow velocity may change as the atmospheric pressure changes due to the venturi effect. Here, the venturi effect means that when a fluid passes through a wide inner diameter of a pipe and passes through a narrow inner diameter portion, the pressure of the fluid is relatively decreased and the flow velocity increases accordingly.

In other words, as shown in (a) of Figure 4, the external air flowing in from the outer surface of one side and the other side of the main body 110 moves to the second passage 126 through the first passage 125 to increase the speed. and may be discharged from the second passage 126 to the exhaust hole 112 at an increased speed.

In addition, as shown in FIG. 4 , the second passage 126 may be formed by a plurality of insertion members 160 inserted into the main passage, and more specifically, the insertion member 160 is the main passage 121 . ) has an outer diameter corresponding to the inner diameter, and is inserted into the main passage 121 to adjust the inner diameter of the second passage 126 .

The number or inner diameter of the insertion member 160 may be selectively set.

On the other hand, as shown in (b) of FIG. 4 , the auxiliary passage 122 is connected to the third passage 127 and the third passage 127 extending from the outer surface of the main body 110 into the main body 110 . and may include a fourth passage 128 having an inner diameter narrower than that of the third passage 127 .

More specifically, the third passage 127 may be connected to one outer surface of the main body 110 , and the fourth passage 128 may be connected to the other outer surface of the main body 110 . Here, the third passage 127 may be formed to have a narrow inner diameter toward the other outer surface of the main body 110 , and the external air passes through the fourth passage 128 from the third passage 127 , the other outer surface of the main body 110 . The velocity of the outside air may change in the process of being circulated.

Here, the flow rate may be changed by the above-described venturi effect.

Accordingly, in the process in which the outside air is circulated from the third passage 127 to the other outer surface of the main body 110 through the fourth passage 128, the velocity V2 of the outdoor air in the fourth passage 128 is the third passage ( 127) may be faster than the speed V1 of the outside air, and accordingly, the air may be circulated more rapidly, and as a result, the air may be rapidly circulated in and out of the body 110 .

2 to 4 , the exhaust pipe 140 may be coupled to the exhaust hole 112 to be connected to the circulation passage 120 to discharge air heated by the body 110 to the outside.

More specifically, since one end of the exhaust pipe 140 is coupled to the exhaust hole 112 of the body 110 and the other end extends to the outside, a pressure difference may occur between one end and the other end by the heat conducted to the body 110 . can

The air heated by the main body 110 inside the main body 110 due to the structure of the exhaust pipe 140 moves from one end to the other end along the exhaust pipe 140 by a stack effect, that is, the main body 110 . It can be discharged from the inside to the outside.

2 to 4 , one end of the exhaust pipe 140 is coupled to the exhaust hole 112 , and the other end of the exhaust pipe 140 may have a narrower inner diameter than that of one end. Accordingly, the air inside the exhaust pipe 140 moves from one end to the other end due to the above-described venturi effect, and the speed may increase, and thus the heat dissipation efficiency of the present embodiment may be improved.

Here, the exhaust pipe 140 may be formed such that a plurality of pipes having external and internal diameters corresponding to each other are continuously inserted as in the structure of the above-described insertion member 160 .

As shown in FIGS. 2, 3 and 5 , the heat dissipation member 150 may be installed in the main body 110 to radiate heat conducted from the main body 110 to the outside. Here, the heat dissipation member 150 may be made of a material having high thermal conductivity, for example, copper or aluminum.

As shown in FIG. 3 , an insertion hole 114 may be formed in the body 110 , and the heat dissipation member 150 may be inserted into the insertion hole 114 to be coupled to the body 110 . More specifically, the heat dissipation member 150 may be disposed such that one end is inserted into the insertion hole 114 and the other end extends to the outside of the body 110 .

In addition, the heat dissipation member 150 may be installed in a portion where heat is more concentrated to improve heat dissipation efficiency, and a plurality of heat dissipation members 150 are disposed to be spaced apart from the exhaust pipe 140 , and the LED element 20 together with the exhaust pipe 140 . ) can be dissipated to the outside.

The body 110, the heat dissipation fin 130, the exhaust pipe 140, and the insertion member 160 of this embodiment described above are made of a material with high thermal conductivity in order to rapidly dissipate the heat generated by the LED element 20 to the outside. It may be made, for example, may be made of copper or aluminum.

In the above, although an embodiment of the present invention has been described, those of ordinary skill in the art can add, change, delete or add components within the scope that does not depart from the spirit of the present invention described in the claims. The present invention may be variously modified and changed by, etc., and this will also be included within the scope of the present invention.

10: substrate
20: LED element
30: housing
100: heat sink mechanism for LED lighting fixtures
110: body
112: exhaust hole
114: insertion hole
120: circulation passage
121: main passage
122: auxiliary passage
125: first passage
126: second passage
127: third passage
128: fourth passage
130: heat dissipation fin
132: protrusion
140: exhaust pipe
150: heat dissipation member
160: insert member

Claims (10)

a body coupled to the substrate on which the LED element is mounted to conduct heat generated from the LED element;
a plurality of heat dissipation fins formed to be spaced apart from each other on the body to dissipate heat conducted from the body to the outside;
a circulation passage formed in the main body so that external air can circulate in and out of the main body;
an exhaust hole formed in at least one of the circulation passages; and
and an exhaust pipe coupled to the exhaust hole so as to be connected to the circulation passage to discharge the air heated by the main body to the outside,
The circulation passage is formed through the main body so as to extend from one outer surface of the main body to the other outer surface of the main body,
The circulation passage is
a main passage in which the exhaust hole is formed so that the air introduced into the main body and heated by the main body is discharged to the outside; and
and an auxiliary passage formed in the main body so that external air can circulate in and out of the main body,
The main passage is
a first passage extending from the outer surface of the main body into the main body; and
and a second passage connected to the first passage and having an inner diameter narrower than that of the first passage,
The second passage is connected to the exhaust hole,
Further comprising an insertion member formed with an outer diameter corresponding to the inner diameter of the main passage and inserted into the main passage to adjust the inner diameter of the second passage,
One end of the exhaust pipe is coupled to the exhaust hole,
One end of the exhaust pipe is formed with an inner diameter wider than the other end of the exhaust pipe,
The exhaust pipe is formed by coupling a plurality of pipes having different diameters to each other,
The inner diameter of any one of the plurality of pipes corresponds to the outer diameter of the other one of the plurality of pipes,
Outside air is introduced into the first passage from the outside and is circulated back to the outside through the second passage, the exhaust hole, and the exhaust pipe.
delete delete According to claim 1,
The first passage is formed in plurality,
Any one of the plurality of first passages is connected to the outer surface of one side of the body,
The other of the plurality of first passages is connected to the other outer surface of the main body,
and the second passage is interposed between the plurality of first passages.
5. The method of claim 4,
The second passage is formed with a central inner diameter narrower than both ends, a heat sink mechanism for LED lighting fixtures.
According to claim 1,
One end of the auxiliary passage is formed to have a narrower inner diameter than the other end of the auxiliary passage, a heat sink mechanism for LED lighting equipment.
delete According to claim 1,
The heat sink mechanism for LED lighting equipment further comprising a heat dissipation member installed on the main body to radiate heat conducted from the main body to the outside.
9. The method of claim 8,
Further comprising an insertion hole formed inside the body,
The heat dissipation member is disposed so that one end is inserted into the insertion hole and the other end is extended to the outside of the main body, a heat sink mechanism for LED lighting equipment.
10. The method of claim 9,
The heat dissipation member is formed in plurality and is disposed to be spaced apart from each other around the exhaust pipe, a heat sink mechanism for an LED lighting device.

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