KR101556626B1 - Led light apparatus - Google Patents

Abstract

The LED lighting device according to the present invention includes an LED light unit including a light emitting diode for converting electrical energy into light and heat, a first heat radiator attached to the upper side of the LED light unit, And a second heat discharging body having one side facing the first heat discharging body and the opposite side of the one side being located in a space above the inward side of the indoor heat exchanger, wherein when the one side is in contact with the first heat discharging body, And a second radiating member for transmitting the heat emitted from the body to a space above the indoor top surface.

Description

{LED LIGHT APPARATUS}

The present invention relates to an LED illumination device.

A commonly used illumination device is an illumination device that converts electrical energy into light. Typical examples of such lighting devices include incandescent lamps and fluorescent lamps.

These lighting devices do not convert electrical energy into 100% light, but convert some electrical energy into heat. This heat is considered as a factor to lower the efficiency of the lighting apparatus.

The LED lighting device is a lighting device that uses a light emitting diode that converts electric energy into light and heat as a light source. When such an LED illumination device is embedded in the interior top side (e.g., the ceiling), all the heat generated in the LED is considered to be a factor lowering the efficiency of the LED illumination device. For example, when light emitting diodes convert 20% to light and 80% to heat for electrical energy, the LED lighting device has 20% efficiency and 80% is wasted as heat.

In view of the foregoing, it is an object of the present invention to provide a technique of using, in one aspect, the heat emitted by an LED illumination device as room heating.

An object of the present invention is, in another aspect, to provide a technique for preventing heat emitted by an LED illumination device from interfering with indoor cooling.

In order to achieve the above object, in one aspect, the present invention provides an LED lighting device installed on a cabin interior side, comprising: an LED light unit including a light emitting diode for converting electrical energy into light and heat; A first heat dissipator unit for dissipating heat of the light emitting diode through a first heat dissipator attached to the upper side of the LED light unit; And a second heat discharging body having one side facing the first heat radiating body and the other side being located in an upper space above the indoor upper side, and the first radiating body is discharged from the first radiator when the one side is in contact with the first radiating body And a second heat radiator for transmitting heat to the upper space above the indoor top surface.

According to another aspect of the present invention, there is provided an LED lighting device provided on a cabin interior side, comprising: an LED light unit including a light emitting diode for converting electric energy into light and heat; And a heat discharging body having one side thereof located in the upper space of the indoor upper side and the other side slidingly engaged with the LED electric lamp section and receiving part of the heat of the LED through the contact surface with the LED electric lamp section, And a heat dissipating body portion for emitting the light to a space above the side surface.

As described above, according to the present invention, the heat emitted by the LED illumination device can be used as indoor heating at the time when the heating is required, and the heat emitted by the LED illumination device at the time of requiring cooling inhibits the indoor cooling There is an effect of preventing such a problem.

1 is a perspective view of an LED illumination device according to an embodiment of the present invention.
2 is a view showing the connection state of the LED lighting apparatus and the indoor top side.
Fig. 3 is a view showing that the first heat radiator and the second heat radiator come into contact with each other through the heat radiating sheet.
4 is a front view of an LED lighting device in which a magnetic substance is further included in the first heat radiator and the second heat radiator.
5 is a perspective view of an LED lighting device in which a heat dissipating extension plate is connected to a first heat dissipating body portion.
6 is a view showing that the connection shaft of the heat dissipating extension plate and the connection shaft of the second heat dissipator are connected to the cam.
7 is a perspective view of an LED illumination device according to another embodiment of the present invention.
8 is a view for explaining sliding coupling of the LED light section and the heat radiator section.
9 is a perspective view of an LED lighting device in which a side heat sink is connected to an LED light portion.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected,""coupled," or "connected."

When a current is supplied to the light emitting diode, the light emitting diode converts the electric energy supplied through the current into heat along with the light. In the present invention, the light emitted from the light emitting diode is used for illumination purposes, and the heat emitted from the light emitting diode is used for indoor heating or is emitted to the outside.

1 is a perspective view of an LED illumination apparatus 100 according to an embodiment of the present invention.

Referring to FIG. 1, the LED lighting apparatus 100 may include an LED lamp unit 110, a first heat discharging unit 120, and a second heat discharging unit 130, .

The LED illumination device 100 is a lighting device installed on the indoor upper side. A section within the house, referred to as a ceiling, is an example of an interior top view.

The LED light unit 110 provides light to the room using a light emitting diode. A light emitting diode is a kind of diode which can be made of a material such as potassium and phosphorus, and has a property of emitting light when current is supplied to such a light emitting diode. Not all the energy of the current flowing into the light emitting diode is converted into light, and some energy of the current flowing to the light emitting diode is converted into heat.

The LED light unit 110 includes the above-described light emitting diode, and may further include an overall circuit device for supplying current to the light emitting diode. For example, when an AC current is supplied through a commercial power grid, the LED light unit 110 may include a rectifying circuit for converting an AC current to a DC current. Further, the LED light unit 110 may include a current control circuit or a voltage control circuit for controlling the amount of current supplied to the light emitting diode. In addition, the LED light unit 110 may include a safety related circuit such as an overcurrent prevention circuit and an overvoltage prevention circuit for protecting the light emitting diode and the internal circuit.

The LED light unit 110 may include only a wire supplied from the outside without the above-described circuit. For example, there is a central control device (not shown) for supplying a DC current to two or more LED illumination devices 100. The LED illumination device 100 receives current from such a central control device To the included light emitting diodes.

The LED light unit 110 may further include a mechanism for guiding light emitted by the light emitting diode. The LED light unit 110 further includes a lamp shade, so that the light emitted from the light emitting diode can be induced to direct downward into the house. In addition, the LED light unit 110 may further include a diffusion plate for scattering light to guide light to a wider area in the room.

Heat generated in the light emitting diode must be emitted to the outside. The first heat discharger 120 emits heat generated in the light emitting diode to the outside. Referring to FIG. 1, the first heat discharger 120 emits heat of the light emitting diode through a first heat discharger attached to the upper side of the LED light unit 110. In FIG. 1, the first heat dissipating unit 120 is shown only as a first heat dissipating unit. It is to be understood that the first heat dissipating unit 120 includes the first heat dissipating unit shown in the drawing, but may further include other components than the first heat dissipating unit.

The heat dissipator means a device that is positioned between a high-temperature heat-generating portion and a low-temperature cooling portion and transfers the heat of the heat-generating portion to the cooling portion. A typical embodiment of the heat sink is a heat sink. The heat sink is made of a metal having high thermal conductivity (for example, aluminum). One side of the heat sink is in contact with a high-temperature heat-generating portion, and the other side of the heat-sink is exposed to a low-temperature cooling portion (air in the case of air-cooling). Heat is transmitted from high temperature to low temperature. Since the heat sink is made of a material having high conductivity of such heat, the heat of high temperature in contact with one side can be transmitted to the other side.

When the first heat radiator is a heat sink, one side of the first heat radiator is in contact with the packaging of the light emitting diode or the light emitting diode (the material surrounding the light emitting diode), and the other side is the light emitting diode and the other side In the embodiment, the indoor air or the second heat dissipator). The first heat discharger receives heat from the light emitting diode through one side and discharges the heat to the other side.

The first heat-radiator may be another heat-radiator other than the heat sink. For example, the first radiator may be a heat pipe. A heat pipe is a mechanism that encloses a certain amount of liquid in a pipe, and can transfer heat in a certain direction through the process of evaporation and condensation of the liquid contained in the pipe.

The second heat dissipating body 130 includes a second heat dissipating body having one side facing the first heat dissipating body 120 and the other side being located above the indoor upper side 140. The second heat discharger 130 transfers heat radiated from the first heat radiator 120 to the upper space of the indoor upper side 140 when the first heat radiator 120 contacts the first heat radiator 120, Heat is not received from the first heat dissipating body portion 120 during non-contact.

In FIG. 1, the second heat discharger 130 is shown only as a second heat radiator. It is to be understood that the second heat-radiator body 130 may include a second heat-radiator as shown, but may further include other configurations than the second heat-radiator.

The second heat-radiator may be a heat sink or a heat pipe in the same manner as the first heat-radiator described above.

In the second heat discharging body, a portion located above the indoor upper side 140 may have a structure in which two or more fins are attached. This fin attachment structure has a function of widening the heat radiating area of the second heat discharging body.

2 is a view showing the connection state of the LED lighting apparatus and the indoor top side.

Referring to FIG. 2, the LED light unit 110 and the first heat dissipating unit 120 are in close contact with each other. The first heat discharger 120 is coupled to the indoor top surface 140 using the connecting wire 210. The connection wire 210 connects the at least two portions of the first heat radiating member 120 and the inside upper surface 140 to distribute the load generated by the weight of the LED light unit 110 and the first heat radiating member 120 .

FIG. 2 also shows the heat flow according to the coupled state of the first heat discharging unit 120 and the second heat discharging unit 130, as well as the connection state of the LED lighting apparatus and the indoor top surface.

Referring to FIG. 2, a connecting shaft 220 for coupling the second heat discharging unit 130 is disposed between the first heat discharging unit 120 and the second heat discharging unit 130. The first radiating member 120 and the second radiating member 130 are coupled through the coupling shaft 220 for coupling the second radiating member 130.

In FIG. 2, the first heat radiator part 120 and the second heat radiator part 130 are shown not to be in close contact with each other. The heat of the light emitting diodes transferred to the first heat dissipating body 120 can not be easily transmitted to the second heat dissipating body 130 when the first heat dissipating body 120 and the second heat dissipating body 130 are not in close contact with each other. In the non-contact state of the first heat dissipating body portion 120 and the second heat dissipating body portion 130, heat of the light emitting diodes transferred to the first heat dissipating body portion 120 is discharged to the lower space of the indoor upper side (reference numeral 230) .

On the other hand, the first heat discharger 120 and the second heat radiator 130 may be coupled to each other via the connecting shaft 220. When the first heat dissipating body 120 and the second heat dissipating body 130 are closely coupled to each other, heat of the light emitting diode transferred to the first heat dissipating body 120 can be transmitted to the second heat dissipating body 130 again. Through this heat transfer path, the heat of the light emitting diode is discharged through the second heat discharging unit 130, and the heat of the light emitting diode is discharged to the upper space of the indoor upper side as shown in the reference numeral 240 of FIG. In other words, the heat radiated from the first radiating member 120 is transmitted to the second radiating member 130 through the contact surface of the first radiating member 120 and the second radiating member 130, This heat is discharged through the upper space above the indoor side where the second heat discharger 130 is located.

In the LED lighting apparatus 100 according to an embodiment of the present invention, the heat generated from the light emitting diodes may be transmitted to the indoor side surface 130 of the indoor heat exchanger 130 depending on whether the first heat dissipator 120 and the second heat exchanger 130 are coupled. (Reference numeral 230) or to the upper space of the indoor upper side (reference numeral 240).

Fig. 3 is a view showing that the first heat radiator and the second heat radiator come into contact with each other through the heat radiating sheet.

Referring to FIG. 3, the second heat discharger of the second heat radiator 130 may further include a heat radiating sheet 310 formed of a stretchable member at a portion contacting the first heat radiator 120. Such a heat-radiating sheet can be made by mixing a highly conductive metal (such as copper) with a stretchable polycarbonate.

The heat dissipation sheet 310 may be included in the first heat dissipation unit 120 instead of the second heat dissipation unit 130.

The heat-radiating sheet 310 may be formed such that when the contact surfaces of the first heat-radiator body 120 and the second heat-radiator body 130 are made of materials having low elasticity (for example, metals such as aluminum) It plays a role.

The first heat discharger 120 and the second heat radiator 130 may include a magnetic material and the first heat radiator 120 and the second heat radiator 130 may be coupled by the magnetic force of the magnetic bodies.

4 is a front view of the LED lighting device 100 in which the first and second heat radiating units 120 and 130 further include magnetic bodies 410 and 420.

Referring to FIG. 4, the first heat dissipating unit 120 includes a magnetic material corresponding to reference numeral 410, and the second heat dissipating unit 130 includes a magnetic member corresponding to the reference numeral 420. The first heat discharger 120 and the second heat discharger 130 can be brought into close contact with each other by the magnetic bodies 410 and 420.

The coupling shaft 220 for coupling the second heat-radiator body 130 may further include a resilient member (for example, a spring). Through the elastic member, the connection shaft 220 for coupling the second heat discharger 130 can maintain the first heat radiator 120 and the second heat radiator 130 at a predetermined interval. On the other hand, if the distance between the first heat discharger 120 and the second heat radiator 130 is shortened due to the user's artificial force, the magnetic forces of the magnetic bodies 410 and 420 included in the first heat radiator 120 and the second heat radiator 130, So that the first heat discharger 120 and the second heat radiator 130 can be coupled to each other through the magnetic force.

The first heat dissipating unit 120 may further include a heat dissipating extension plate to extend the heat dissipating area of the first heat dissipating unit.

5 is a perspective view of an LED illumination device 100 in which a heat dissipation extension plate 510 is connected to a first heat dissipation unit 120. As shown in FIG.

Referring to FIG. 5, the first heat-radiator unit 120 further includes a heat-radiating extension plate 510 connected in parallel with the indoor top surface 140. The heat dissipation extension plate 510 may be combined with the first heat dissipation member to expand the heat radiation area of the first heat dissipation member. The heat spreading expansion plate 510 may be made of a metal such as aluminum.

The heat dissipating extension plate 510 is a heat dissipating body located in the lower space of the indoor upper side surface 140 and is formed to have heat generated by the light emitting diodes emitted through the first heat dissipating body portion 120 to be discharged to the lower space of the indoor upper side surface 140 do.

When the heat dissipating extension plate 510 is coupled to the first heat dissipating unit 120 to discharge heat to the lower space of the indoor top side 140 according to the use of the embodiment, The second heat dissipating body 130 may be separated from the first heat dissipating body 120 by separating the heat dissipating body 120 from the first heat dissipating body 120. In this case, And the discharge heat of the first heat dissipating unit 120 is transferred to the upper space of the indoor upper side 140.

The first heat discharger 120 may further include a cam for converting the horizontal axis movement by the connection axis with the heat dissipation extension plate 510 and the vertical axis movement by the connection axis between the second heat dissipator 130 and the heat dissipation extension plate 510.

6 is a view showing that the connecting shaft 630 of the heat dissipating extension plate 510 and the connecting shaft 220 of the second heat dissipating body 130 are connected to the cam 610. FIG.

Referring to FIG. 6, the first heat discharger 120 includes a cam 610. The cam 610 rotates about the rotation axis 620 so that the connection axes 220 and 630 move along the circumference.

When the connection shaft 630 between the first heat dissipating member 120 and the heat dissipating extension plate 510 moves in the horizontal axis, the cam 610 rotates by the length of the circumference corresponding to the movement distance. As the cam 610 rotates, the connecting shaft 220 between the first heat discharging body 120 and the second heat discharging body 130 also rotates and the first heat discharging body 120 and the second heat radiating body The connecting shaft 220 between the body portions 130 moves in the vertical axis.

The connection shaft 630 between the first heat radiator body 120 and the heat radiating extension plate 510 and the connection shaft 220 between the first heat radiator body 120 and the second heat radiator body 130 around the cam 610, And moves in conjunction with this. 6, when the first heat radiator 120 and the heat radiating extension 510 are in close contact with each other, the first heat radiator 120 and the second heat radiator 130 are separated from the connection shafts 220 and 630 Can be determined. In this case, when the heat dissipating extension plate 510 is moved in the separating direction, the second heat dissipating unit 130 is coupled to the first heat dissipating unit 120 according to the movement of the cam 610 and the connection shafts 220 and 630.

5, when the heat dissipating extension plate 510 and the second heat dissipating body 130 are coupled to the first heat dissipating body 120 at different points of time and the heat dissipation extension plate 510 is coupled to the first heat dissipating body 120, The LED lighting apparatus 100 can radiate heat to the upper space of the indoor upper side 140 when the second radiator 130 is coupled. At this time, the heat dissipating extension plate 510 and the second heat dissipating body 130 are interlocked with each other through the cam 610, so that the LED illumination device 100 can attach only one additional heat dissipating body to the first heat dissipating body 120 .

7 is a perspective view of an LED illumination device according to another embodiment of the present invention.

Referring to FIG. 7, the LED lighting apparatus 700 may include an LED light section 710 and a radiator section 720.

The LED light unit 710 includes a light emitting diode that converts electrical energy into light and heat.

The LED light unit 710 provides light to the room using a light emitting diode. A light emitting diode is a kind of diode which can be made of a material such as potassium and phosphorus, and has a property of emitting light when current is supplied to such a light emitting diode. Not all the energy of the current flowing into the light emitting diode is converted into light, and some energy of the current flowing to the light emitting diode is converted into heat.

The LED light unit 710 includes the light emitting diode described above, and may further include an overall circuit device for supplying current to the light emitting diode. For example, when an AC current is supplied through a commercial power grid, the LED light unit 110 may include a rectifying circuit for converting an AC current to a DC current. Further, the LED light unit 110 may include a current control circuit or a voltage control circuit for controlling the amount of current supplied to the light emitting diode. In addition, the LED light unit 710 may include safety related circuits such as an overcurrent prevention circuit and an overvoltage prevention circuit for protecting the light emitting diode and the internal circuit.

The LED light unit 710 may include only an electric wire supplied from the outside without the above-described circuit. For example, there is a central control device (not shown) for supplying a DC current to two or more LED lighting devices 700. The LED lighting device 700 receives current from such a central control device To the included light emitting diodes.

The LED light unit 710 may further include a mechanism for guiding light emitted by the light emitting diode. The LED light unit 710 further includes a lamp shade, so that the light emitted from the light emitting diode can be induced to direct downward into the house. In addition, the LED light unit 710 may further include a diffusion plate for scattering light to induce light to be diffused into a wider area in the house.

Heat generated in the light emitting diode must be emitted to the outside. The heat dissipating unit 720 discharges heat generated in the light emitting diode to the outside. Referring to FIG. 7, the heat dissipating unit 720 emits heat of the light emitting diode through the heat dissipating unit attached to the upper side of the LED light unit 710. In Fig. 7, the heat dissipating unit 720 is shown only as a heat dissipating unit. It is to be understood that the heat dissipating body portion 720 includes the heat dissipating body shown in the drawing, but may further include other configurations other than the heat dissipating body.

The heat dissipator means a device that is positioned between a high-temperature heat-generating portion and a low-temperature cooling portion and transfers the heat of the heat-generating portion to the cooling portion. A typical embodiment of the heat sink is a heat sink. The heat sink is made of a metal having high thermal conductivity (for example, aluminum). One side of the heat sink is in contact with a high-temperature heat-generating portion, and the other side of the heat-sink is exposed to a low-temperature cooling portion (air in the case of air-cooling). Heat is transmitted from high temperature to low temperature. Since the heat sink is made of a material having high conductivity of such heat, the heat of high temperature in contact with one side can be transmitted to the other side.

When the heat sink is a heat sink, one side of the heat sink is in contact with the LED light portion 710, and the other side is directed to the other side of the LED light portion 710. The heat discharger receives heat from the LED light unit 710 through one side and discharges the heat to the other side.

The heat dissipating member may be a heat dissipating member other than the heat sink. For example, the radiator may be a heat pipe. A heat pipe is a mechanism that encloses a certain amount of liquid in a pipe, and can transfer heat in a certain direction through the process of evaporation and condensation of the liquid contained in the pipe.

7, one side of the heat discharging body of the heat discharging body 720 is located in the upper space of the indoor upper side 140, and the other side of the heat discharging body of the heat discharging body 720 is slidingly coupled with the LED light unit 710. The heat discharging body receives part of the heat of the light emitting diode through the contact surface with the LED light part 710 and discharges it to the upper space of the indoor upper side 140.

The LED light unit 710 may include a heat dissipation member. The LED light unit 710 includes a light emitting diode or a heat sink (for example, a heat sink) attached to the packaging of the light emitting diode. The heat sink 720 can be slidingly coupled to the heat sink body 720 again. Of course, the LED light unit 710 may include a light emitting diode or a package of the light emitting diode slidingly coupled with the heat dissipating body of the heat dissipating body 720 without including the heat dissipating body.

The LED light unit 710 emits a part of the heat of the light emitting diode through the contact surface with the heat dissipating unit 720. And the rest of the heat of the light emitting diode is directly emitted from the LED light portion 710.

Most of the surface area of the heat dissipator 720 is located in the upper space of the indoor top surface 140. Accordingly, the heat of the light emitting diode, which is transmitted from the LED light unit 710 to the heat dissipating unit 720, is emitted to the upper space of the indoor top surface 140 where a large portion of the surface area is located.

The heat of the light emitting diode which is not transmitted to the heat dissipating body portion 720 is released to the space below the indoor upper side surface 140.

The LED lighting apparatus 700 according to another exemplary embodiment of the present invention may be configured such that the heat of the LEDs emitted to the upper space of the indoor upper side surface 140 and the heat of the LEDs emitted to the upper space of the indoor upper side surface 140 according to the size of the contact surface of the LED light source unit 710 and the heat sink body 720 The size of the column of light emitting diodes emitted into the space below the top surface 140 is determined.

8 is a view for explaining sliding coupling of the LED light section and the heat radiator section.

8, the heat dissipating unit 720 includes a sliding groove 750, and the LED light unit 710 includes a sliding bar 740 that can be engaged with the sliding groove 750. [ The sliding bar 740 of the LED light unit 710 is coupled to the sliding groove 750 of the heat dissipating unit 720 and can be moved along the direction of the sliding groove 750. The sliding groove 750 and the sliding bar 740 may have a rail on one side and a roller on the other side to help the sliding bar 740 move in the sliding groove 750.

9 is a perspective view of an LED lighting device 700 in which a side heat sink is connected to an LED light unit 710. FIG.

Referring to FIG. 9, the LED light unit 710 further includes a side heat sink 910 connected to the indoor upper side 140 in a side-by-side direction. The side heat sink 910 may be coupled with the LED light source 710 to extend the heat dissipation area of the LED light source 710. The side heat sink 910 may also be made of a metal such as aluminum as a kind of the heat sink described above.

The side heat sink 910 is a heat sink located in the lower space of the indoor upper side 140 and induces heat of the LEDs emitted through the LED light source 710 to be emitted to the lower space of the indoor upper side 140 .

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that the constituent element can be implanted unless specifically stated to the contrary, But should be construed as further including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (8)

An LED lighting device provided on a cabin interior side surface,
An LED light unit including a light emitting diode for converting electrical energy into light and heat;
A first heat dissipator unit for dissipating heat of the light emitting diode through a first heat dissipator attached to the upper side of the LED light unit; And
And a second heat discharger disposed at one side of the first heat radiator and facing the first heat radiator, and the other side of the second heat radiator is positioned at a space above the inward side of the indoor heat exchanger, And a second heat dissipating unit for transmitting the heat generated by the first heat dissipating unit to the indoor upper side space,
Wherein each of the first heat radiator and the second heat radiator includes a magnetic body and the first heat radiator and the second radiator are coupled by the magnetic force of the magnetic bodies.
The method according to claim 1,
Wherein the second heat-radiator further comprises a heat-radiating sheet made of elastic material on one side thereof.
delete An LED lighting device provided on a cabin interior side surface,
An LED light unit including a light emitting diode for converting electrical energy into light and heat;
A first heat dissipator unit for dissipating heat of the light emitting diode through a first heat dissipator attached to the upper side of the LED light unit; And
And a second heat discharger disposed at one side of the first heat radiator and facing the first heat radiator, and the other side of the second heat radiator is positioned at a space above the inward side of the indoor heat exchanger, And a second heat dissipating unit for transmitting the heat generated by the first heat dissipating unit to the indoor upper side space,
The first heat radiator section may further include a heat radiating expansion plate to expand the heat radiating area of the first heat radiator,
Wherein the first radiating member further comprises a cam for converting a horizontal axis movement by a connection axis with the heat dissipating extension plate and a vertical axis movement by a connection axis between the first heat dissipator and the second heat dissipator.
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