JP7137144B2 - Light-emitting unit and lighting device - Google Patents

Description

TECHNICAL FIELD Embodiments of the present invention relate to a light-emitting unit using a light-emitting module and a lighting device using the light-emitting unit.

A lighting apparatus using a light-emitting module having a light-emitting element employs a structure in which heat generated by the light-emitting module is conducted to a radiator to dissipate the heat.

In order to facilitate replacement of the light-emitting module, some of such lighting devices are unitized as a light-emitting unit in which the light-emitting module is arranged in a housing, and the light-emitting unit is detachable from the radiator. . As an attachment/detachment structure of the light emitting unit, there is a base structure in which the light emitting unit is attached/detached by rotating the light emitting unit with respect to the radiator.

However, when a base structure is used as a structure for attaching and detaching the light-emitting unit, it is difficult to increase the contact force of the light-emitting unit to the heat sink in order to ensure the attachment and detachment of the light-emitting unit to the heat sink, resulting in a decrease in thermal conductivity. There is a problem that it is unstable or unstable.

JP 2015-65074 A

SUMMARY OF THE INVENTION It is an object of the present invention to provide a light-emitting unit and a lighting device that can stably ensure high thermal conductivity to a radiator while being attachable to and detachable from the radiator.

The light-emitting unit of the embodiment is joined to the radiator, and is attracted to and fixed to the radiator by a plurality of fasteners. A light emitting unit includes a light emitting module and a housing. A light-emitting module has a light-emitting element. The housing has a base having a mounting surface for mounting the light emitting module on one side and a heat conducting surface bonded to a radiator on the other side to conduct heat; and a plurality of hanging portions which are provided in a substantially L shape protruding toward the side and on which fasteners are hung.

According to the light emitting unit of the embodiment, it can be expected to stably ensure high thermal conductivity to the radiator while being detachable from the radiator.

1 is an exploded perspective view of a light emitting unit showing an embodiment; FIG. It is a perspective view of a light emission unit same as the above. It is a perspective view of the back side of the same light-emitting unit. It is sectional drawing of a light emission unit same as the above. It is sectional drawing of a light emission unit same as the above. FIG. 3 is a cross-sectional view of an illumination device using the same light emitting unit;

An embodiment will be described below with reference to the drawings.

A light emitting unit 10 is shown in FIGS. 1-5.

The light-emitting unit 10 includes a light-emitting module 11, a housing 12 that houses the light-emitting module 11, a cooling medium 13 that fills the housing 12, and a seal that seals the housing 12 after the cooling medium 13 is filled. Part 14 and the like are provided. It should be noted that the light emitting unit 10 will be described assuming that the light irradiation direction is the front surface, and the opposite side to the front surface is the back surface.

The light-emitting module 11 has a substrate 17 and a light-emitting portion 18 provided on the front surface of the substrate 17 . The light-emitting module 11 of this embodiment is composed of a COB (Chip on Board) module, and includes a substrate 17, a plurality of light-emitting elements 19 mounted on the front surface of the substrate 17, and a plurality of light-emitting elements 19 mounted on the front surface of the substrate 17. and a sealing layer 21 that fills the inside of the surrounding portion 20 and seals the plurality of light emitting elements 19 .

The substrate 17 is, for example, a square metal plate, the surface of which is covered with an insulating layer. A wiring pattern is formed on the front surface of the substrate 17, and a plurality of light emitting elements 19 are mounted on this wiring pattern.

The light emitting element 19 is a semiconductor light emitting element, and for example, an LED is used.

The sealing layer 21 is made of translucent and insulating material such as silicone resin. The sealing layer 21 may contain a phosphor that is excited by the light from the light emitting element 19 to generate light with a wavelength different from that of the light from the light emitting element 19 . The surface of the sealing layer 21 is configured as the light emitting section 18. As shown in FIG.

The light-emitting module 11 further has wires 22 electrically connected to the plurality of light-emitting elements 19 through the wiring pattern of the substrate 17 . The electric wire 22 may be directly connected to the wiring pattern of the substrate 17, or may be connected via a connector or the like. A connector connected to the power supply is provided at the tip of the electric wire 22 .

The light-emitting module 11 is not limited to the COB module, and may be a board 17 on which a plurality of surface-mounted LEDs are mounted or an organic EL is provided.

Further, the housing 12 is formed in the shape of a hollow disc that is thin in the front-rear direction. The housing 12 includes a base portion 24, a peripheral wall portion 25 provided around the base portion 24, a plurality of hook portions (hook portions) 26 protruding around the base portion 24, a front portion 27 facing the front of the base portion 24, and this It has a translucent part 28 provided on the front part 27 and a closed space 29 provided inside. The sealed space 29 is a space that is configured by the housing 12 and the sealing portion 14 that is sealed after the housing 12 is filled with the cooling medium 13, and is a space that is sealed so that the cooling medium 13 does not leak out. .

The housing 12 includes a main body 30 and a cover body 31 arranged on the front side of the main body 30. As shown in FIG. Further, the cover body 31 has a cover portion 32 fitted to the main body 30 and a translucent portion 28 in the center of the cover portion 32 . Therefore, the housing 12 is composed of a plurality of members including the main body 30, the cover portion 32 of the cover body 31, and the translucent portion .

The main body 30 is integrally formed of, for example, a metal material. The main body 30 has a base portion 24, a peripheral wall portion 25 and a plurality of hanging portions 26. As shown in FIG.

The base portion 24 of the main body 30 is provided in a disk shape, and is provided with a mounting surface 33 for mounting the light emitting module 11 on the front surface, which is one surface, and a heat conduction surface for conducting heat to an external radiator on the back surface, which is the other surface. 34 are provided. The mounting surface 33 and the heat-conducting surface 34 are both circular and planar. The light emitting module 11 is attached to the center of the mounting surface 33 so that the central axis of the housing 12 and the optical axis of the light emitting section 18 are aligned. It is preferable to interpose a heat-conducting sheet, heat-conducting grease, or the like between the mounting surface 33 and the substrate 17 . The light emitting module 11 is attached to the mounting surface 33 by screwing the substrate 17 to the base 24 so as to be in close contact and thermally connected.

The base 24 is provided with two or more holes 35 that communicate the sealed space 29 with the outside, that is, the mounting surface 33 of the base 24 and the heat transfer surface 34 . In this embodiment, there are three holes 35, one wiring hole 35a and two filling holes 35b and 35c. These holes 35 are arranged on the same or substantially the same circumference at positions near the outer periphery of the base 24 . An electric wire 22 drawn out of the housing 12 is inserted through the wiring hole 35a. The hole diameter of the wiring hole 35a is larger than the hole diameters of the filling holes 35b and 35c.

The heat-conducting surface 34 is provided with recesses 36 communicating with the respective holes 35 and having a hole diameter larger than that of the respective holes 35 and accommodating the sealing portion 14 . The recess 36 is provided concentrically with the hole 35 . Further, the heat conducting surface 34 is provided with a groove portion 37 that communicates with the hole portion 35 and the side surface (peripheral wall portion 25) of the housing 12 positioned around the base portion 24. As shown in FIG. In this embodiment, the groove 37 is provided in the recess 36 of the wiring hole 35a. The depth of the recess 36 and the depth of the groove 37 are the same, and the recess 36 and the groove 37 are provided continuously. The depth and width of the groove 37 are larger than the outer diameter of the electric wire 22, so that the electric wire 22 can be inserted thereinto.

A peripheral wall portion 25 of the main body 30 is formed in an annular shape, and a stepped portion 38 to be fitted with the cover body 31 is provided on the inner peripheral portion of the front end.

The hook portions 26 of the main body 30 are, for example, paired and provided at 180° symmetrical positions around the base portion 24 (the housing 12). The pair of hanging portions 26 are arranged in a direction intersecting the direction in which the wiring hole portion 35a and the groove portion 37 of the base portion 24 are provided. Note that three or more hook portions 26 may be provided.

The hooking portion 26 has a quadrangular protruding piece portion 39 that is continuous with the heat conducting surface 34 and integrally protrudes from the outer peripheral portion of the base portion 24 . The hanging portion 26 is provided with a mounting hole 40 penetrating in the front-rear direction. Mounting metal fittings 41 used for mounting to a radiator are attached to the hanging portion 26 . The mounting bracket 41 is attached to the projecting piece portion 39 with a screw 42 screwed into the mounting hole 40 . The mounting bracket 41 is formed in a substantially L shape with the front end protruding forward. Note that the hook portion 26 may be integrally provided in a substantially L-shape by projecting forward the tip end side of the projecting piece portion 39, and the mounting bracket 41 and the screw 42 may be omitted. Therefore, the hook portion 26 includes both the separate type and the integrated type, and in the case of the separate type, the projecting portion 39, the mounting bracket 41, and the like are included.

Furthermore, the cover portion 32 of the cover body 31 is made of, for example, a metal material or a resin material. The cover portion 32 is formed in an annular shape with a circular opening 43 in the center. The inner diameter of the opening 43 is larger than the outer diameter of the light emitting section 18 of the light emitting module 11 . A fitting portion 44 that fits into the stepped portion 38 of the main body 30 is formed in the peripheral portion of the cover portion 32 . A fitting portion between the main body 30 and the cover portion 32 is hermetically fixed with an adhesive, for example. A threaded structure may be provided at the fitting portion between the main body 30 and the cover portion 32 so that the main body 30 and the cover portion 32 are tightly fixed by screwing.

The translucent portion 28 of the cover body 31 is hermetically fixed to the opening 43 of the cover portion 32 by, for example, an adhesive. The outer diameter of the translucent part 28 is larger than the outer diameter of the light emitting part 18 of the light emitting module 11 . The translucent part 28 is made of a translucent material such as glass, ceramics, or resin. The translucent portion 28 may contain the phosphor described above. Furthermore, the translucent part 28 may be a lens that controls light distribution.

In addition, the cooling medium 13 is composed of a fluid that has good thermal conductivity and translucency, is hard to volatilize, and has a high ignition point. As the cooling medium 13, for example, heat transfer oil, silicone oil, ultrapure water, distilled water, deionized water, fluorine-based inert liquid, or the like is used. Perfluorocarbon or the like is used as the fluorine-based inert liquid.

Also, the sealing portion 14 seals each hole portion 35 of the housing 12 in which the closed space 29 is filled with the cooling medium 13 . For example, an adhesive is used for the sealing portion 14 . It should be noted that the sealing portion 14 may use a closing member fitted in the hole portion 35 together with the adhesive. The sealing portion 14 is arranged within the hole 35 and the recess 36 or within the recess 36 without protruding from the heat conducting surface 34 of the housing 12 .

Next, manufacturing of the light emitting unit 10 will be described.

The substrate 17 of the light emitting module 11 is arranged on the mounting surface 33 of the main body 30 and fixed by, for example, screws. At this time, it is preferable to interpose a heat-conducting sheet, heat-conducting grease, or the like between the mounting surface 33 and the substrate 17 . The electric wire 22 connected to the substrate 17 is led out of the main body 30 through the wiring hole 35a.

The main body 30 and the cover body 31 are fitted through an adhesive, and the main body 30 and the cover body 31 are hermetically fixed.

As shown in FIG. 3, the heat transfer surface 34 of the housing 12 is directed upward, and the cooling medium 13 is injected into the sealed space 29 from, for example, one filling hole 35b. By injecting the cooling medium 13 into the sealed space 29, the air in the sealed space 29 escapes to the outside through the filling hole 35b and the wiring hole 35a. The cooling medium 13 completely replaces the air in the closed space 29 and fills each hole 35 until it is filled.

When a large amount of the cooling medium 13 is injected into the sealed space 29, the excess cooling medium 13 overflows from the holes 35 into the recesses 36, but the excess cooling medium 13 flows out of the wiring holes 35a. , and is discharged to the outside through the grooves 37, only a certain amount of the cooling medium 13 that fills the respective holes 35 is filled.

Each hole 35 in each recess 36 is sealed with the sealing portion 14 . When sealing the wiring hole 35a, the wire 22 is placed along the groove 37 and sealed. The manufacture of the light emitting unit 10 is now completed.

When the housing 12 has three holes 35, the wiring holes 35a may be used exclusively for wiring the wires 22. FIG. Also, the number of holes 35 may be two, and in this case, the wiring holes 35a are used both for wiring the wires 22 and for filling the cooling medium 13 or for venting air. In this way, by using the wiring hole 35a for both wiring of the electric wire 22 and for filling the cooling medium 13 or for venting air, the number of the holes 35 that may cause a decrease in airtightness can be reduced.

Next, FIG. 6 shows an example of a lighting device 50 using the light emitting unit 10. As shown in FIG.

The illuminating device 50 is an embedded illuminating device that is embedded in an installation surface such as a ceiling surface. The lighting device 50 includes a radiator 51, a plurality of fasteners 52 provided on the radiator 51, a decorative frame 53 fixed to the lower part of the radiator 51, a reflector 54 arranged in the decorative frame 53, and a radiator. A power supply unit 55 is arranged on the upper part of the body 51 .

The radiator 51 is integrally formed of a metal material. The radiator 51 has a main body portion 57 combined with the decorative frame 53, a mounting base portion 58 projecting downward from the center of the lower surface of the main body portion 57, and heat radiation fins 59 provided on the upper side of the mounting base portion 58. .

The mounting base portion 58 is provided in a substantially cylindrical shape. A bonding surface 60 to which the heat-conducting surface 34 of the light-emitting unit 10 is bonded is formed on the lower surface of the mounting base portion 58 . The joint surface 60 is planar and formed in a shape larger than the heat conducting surface 34 of the light emitting unit 10 . It is preferable to interpose a heat-conducting sheet or heat-conducting grease between the joint surface 60 and the heat-conducting surface 34 of the light-emitting unit 10 .

Around the mount portion 58, an operation space 61 is provided between the outer peripheral portion of the main body portion 57 and the decorative frame 53 so that the fastener 52 can be operated.

Moreover, the fastener 52 is arranged on the side surface of the mounting base portion 58 of the heat radiator 51, and hooks onto the hook portion 26 of the light emitting unit 10 arranged on the mounting base portion 58 of the heat radiator 51. to secure it. A pair of fasteners 52 are provided corresponding to the positions of the pair of hooks 26 of the light emitting unit 10, and are arranged at 180° symmetrical positions around the mount portion 58. As shown in FIG.

The fasteners 52 are called toggle clamps, snap locks, snap locks, toggle latches, or the like, and can attach and detach the light emitting unit 10 with one-touch operation and can be drawn and fixed to the radiator 51 without tools.

The fastener 52 includes a fixed portion 63 fixed to the side surface of the mount portion 58 of the radiator 51, an operation lever portion 65 rotatably connected to the fixed portion 63 by a fulcrum shaft 64, and a fulcrum shaft 64. A connecting portion 67 rotatably connected by a connecting shaft 66 is provided on the distal end side of the operating lever portion 65 . The connecting portion 67 is formed in a substantially U shape, and the operation lever portion 65 is moved in the unlocking direction b (the left operation lever portion 65 in FIG. 6 is counterclockwise, and the right operation lever portion 65 in FIG. 6 is clockwise). Circumferential direction), it can be hooked onto or removed from the hook 26 (mounting bracket 41) of the light emitting unit 10 arranged on the mount 58 of the radiator 51. FIG.

Also, the decorative frame 53 is cylindrical and has a flange portion 69 at its lower portion which is joined to the lower surface of the mounting surface. A plurality of mounting springs 70 for installation are attached to the peripheral surface of the decorative frame 53 .

Further, the reflector 54 is open in the vertical direction, and has a reflecting surface formed on the inner surface thereof that expands downward. The reflector 54 is detachably attached to the inner side of the decorative frame 53 by screwing into the decorative frame 53 or a spring (not shown). The translucent part 28 of the light-emitting unit 10 is arranged to face the upper opening of the reflector 54 .

Further, the power supply unit 55 converts an external power supply such as an AC power supply into a light emission power supply such as a DC power supply for causing the light emitting element 19 to emit light, and supplies the light emission power supply to the light emitting unit 10 . The power supply unit 55 is electrically connected to the electric wire 22 drawn out from the light emitting unit 10 by a detachable connector connection.

When the light-emitting unit 10 is attached to the lighting device 50, the reflector 54 is removed from the decorative frame 53, and the light-emitting unit 10 is placed inside the decorative frame 53 with the heat-conducting surface 34 of the light-emitting unit 10 facing upward. , and the heat-conducting surface 34 of the light-emitting unit 10 is bonded to the bonding surface 60 of the radiator 51 . At this time, it is preferable to interpose a heat conductive sheet, heat conductive grease, or the like between the heat conductive surface 34 of the light emitting unit 10 and the joint surface 60 of the radiator 51 .

Before the light emitting unit 10 is attached to the fastener 52, the operating lever portion 65 is rotated downward in the unlocking direction b, as indicated by the chain double-dashed line in FIG. By hooking the connecting portion 67 of the operating lever portion 65 to the mounting bracket 41 which is the hook portion 26 of the light emitting unit 10 and rotating the operating lever portion 65 upward in the fixing direction a, the operating lever portion 65 The mounting bracket 41 is pulled upward through the connecting portion 67 , that is, the housing 12 of the light emitting unit 10 is drawn toward the radiator 51 .

When the connecting shaft 66 of the connecting portion 67 connected to the operating lever portion 65 rotates in the fixing direction a from the neutral line connecting the fulcrum shaft 64 and the tip of the connecting portion 67 hooked on the mounting bracket 41, , a biasing force acts to rotate the operating lever portion 65 in the fixing direction a, and the fixing state of the fastener 52 is maintained. That is, the light emitting unit 10 can be fixed with one touch without using any tools. Both of the pair of fasteners 52 may be operated substantially together, or one by one may be operated in turn.

The electric wire 22 drawn out from the light emitting unit 10 is electrically connected to wiring from the power source section 55 by a connector or the like. Before fixing the light emitting unit 10 to the radiator 51 with the fastener 52, the electric wire 22 drawn out from the light emitting unit 10 may be electrically connected to the wiring from the power supply section 55 by a connector or the like.

By mounting the reflector 54 inside the decorative frame 53, the mounting of the light emitting unit 10 is completed.

When the light-emitting unit 10 is attached to the radiator 51, the housing 12 of the light-emitting unit 10 is pulled toward the radiator 51 by the fastener 52 and fixed. The bonding surface 60 of 51 is firmly bonded, and high thermal conductivity between housing 12 of light emitting unit 10 and radiator 51 is ensured.

When removing the light emitting unit 10 from the lighting device 50, the reflector 54 is removed from the decoration frame 53, and the operator's finger is inserted into the operation space 61 from the inside of the decoration frame 53 to operate the operation lever of the fastener 52. The portion 65 is rotated downward in the unlocking direction b. By rotating the operation lever portion 65, the connection portion 67 is removed from the mounting bracket 41, which is the hook portion 26 of the light emitting unit 10, as indicated by the chain double-dashed line in FIG. can. That is, the light-emitting unit 10 can be released with one touch without using a tool.

Further, when the illumination device 50 is turned on, light emission power is supplied from the power supply section 55 to the light emitting module 11 of the light emitting unit 10, whereby the light emitting element 19 of the light emitting module 11 emits light, and the surface of the sealing layer 21 of the light emitting module 11 emits light. Light is emitted from the light-emitting portion 18 which is . The light emitted from the light-emitting portion 18 passes through the cooling medium 13 and the light-transmitting portion 28, passes through the reflector 54, and is irradiated to the illumination space below.

The light from the light-emitting element 19 excites the phosphor contained in the sealing layer 21 or the light-transmitting portion 28 to generate light with a wavelength different from that of the light from the light-emitting element 19 . The light from the light emitting element 19 and the light from the phosphor are mixed, and light with a predetermined color temperature is emitted from the light transmitting portion 28 .

The heat generated by the light-emitting element 19 during lighting is conducted from the substrate 17 to the mounting base portion 58 of the radiator 51 through the base portion 24 of the housing 12, and is dissipated into the air from the radiator fins 59 of the radiator 51 and the like. be. Furthermore, the heat generated by the light emitting element 19 is conducted through the substrate 17, the enclosing portion 20, and the sealing layer 21 to the cooling medium 13, and through the cooling medium 13 to the entire housing 12. Heat is also dissipated from the surface.

Furthermore, the phosphor excited by the light from the light emitting element 19 also generates heat. The heat generated by the phosphor is thermally conducted from the sealing layer 21 containing the phosphor or the translucent portion 28 to the cooling medium 13, and is thermally conducted to the entire housing 12 via the cooling medium 13. Heat is also dissipated from the surface.

When housing 12 is composed of a plurality of members having different thermal conductivities, convection is likely to occur in cooling medium 13, and heat radiation efficiency can be improved. In this case, the housing 12 includes the main body 30, the cover portion 32, and the translucent portion 28. Either the heat conductivity of the portion 32 and the light transmitting portion 28 may be different, or the heat conductivity of the main body 30, the cover portion 32 and the light transmitting portion 28 may be different.

In the light emitting unit 10 of the present embodiment configured as described above, the housing 12 is provided with two or more holes 35 that communicate the sealed space 29 with the outside. Since the medium 13 can be injected and the air in the sealed space 29 can be discharged to the outside through the other hole 35, the cooling medium 13 can be easily filled in the sealed space 29 of the housing 12, improving manufacturability. can improve.

In addition, since the hole 35 is provided so as to communicate with the mounting surface 33 of the base 24 of the housing 12 and the heat conducting surface 34, it does not affect the front side of the housing 12, and the design can be maintained. . In addition, by providing the hole 35 on the back side, the sealing section 14 is less susceptible to the light emitted from the light emitting module 11, so deterioration of the sealing section 14 due to light can be suppressed.

In addition, since the heat conducting surface 34 is provided with recesses 36 communicating with the respective holes 35 and having a hole diameter larger than that of the respective holes 35 and accommodating the sealing portion 14, the sealing portion 14 can be held in the recesses 36. The hole portion 35 can be sealed by this, the sealing portion 14 can be prevented from protruding beyond the heat conducting surface 34, and the adhesion between the heat conducting surface 34 and the radiator 51 can be ensured.

In addition, since the heat transfer surface 34 is provided with a groove portion 37 that communicates with the hole portion 35 and the side surface (peripheral wall portion 25) of the housing 12 located around the base portion 24, the cooling medium to the sealed space 29 When the injection amount of 13 is large, excess cooling medium 13 is discharged from the holes 35 through the grooves 37, so that each hole 35 can be filled with only a certain amount of cooling medium 13 to fill.

Moreover, the heat conducting surface 34 is provided with a groove 37 that communicates with the hole 35 and the side surface (peripheral wall 25) of the housing 12 located around the base 24. The electric wires 22 of the light-emitting module 11 can be arranged in the grooves 37, the electric wires 22 can be prevented from protruding from the heat-conducting surface 34, and the adhesion between the heat-conducting surface 34 and the radiator 51 can be ensured.

Further, when the housing 12 is composed of a plurality of members having different thermal conductivities, convection is likely to occur in the cooling medium 13, and heat radiation efficiency can be improved.

Further, since the housing 12 has a plurality of hooks 26 around the base 24 having the mounting surface 33 for mounting the light emitting module 11 and the heat conducting surface 34 to the radiator 51, the housing 12 can be mounted by hooking the hooks 26. It is possible to use the fastener 52 that pulls and fixes the heat sink to the heat sink 51, and it is possible to stably ensure high thermal conductivity to the heat sink 51 while being detachable from the heat sink 51. .

The hooking portion 26 is provided in a substantially L shape that protrudes from the periphery of the base portion 24 and the tip side thereof protrudes toward the side opposite to the heat conducting surface 34, so that the fastener 52 is securely fixed without coming off. can be maintained.

In addition, since the lighting device 50 is provided with a plurality of fasteners 52 that engage with the hooks 26 of the housing 12 of the light emitting unit 10 and pull and fix the housing 12 to the radiator 51, the light emitting unit 10 can be attached and detached with a single touch. In addition, the housing 12 can be drawn and fixed to the radiator 51, and it is possible to stably ensure high thermal conductivity to the radiator 51 while being detachable from the radiator 51. can.

The illumination device 50 using the light-emitting unit 10 is not limited to the embedded illumination device, and can be applied to various illumination devices such as a ceiling direct attachment type, a wall attachment type, and a suspension type.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

10 luminous units
11 light emitting module
12 Enclosure
19 Light emitting element
24 Base
26 Hook
33 Mounting surface
34 Thermal surface
50 lighting equipment
51 Radiator
52 fasteners

Claims (2)

A light-emitting unit that is joined to a radiator and is attracted to and fixed to the radiator by a plurality of fasteners,
a light-emitting module having a light-emitting element;
a base having a mounting surface for mounting the light-emitting module on one side and a heat-conducting surface bonded to the radiator to conduct heat on the other side; a housing comprising a plurality of hooks provided in a substantially L shape protruding toward and on which the fasteners are hooked;
A light emitting unit comprising : a heat sink;
The light-emitting unit according to claim 1 , wherein the heat-conducting surface of the housing is bonded to the radiator;
a plurality of fasteners that are hooked on the hooks of the housing to draw and fix the housing to the radiator;
A lighting device comprising:

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