KR101655968B1

KR101655968B1 - Lamp head for streetlight

Info

Publication number: KR101655968B1
Application number: KR1020160049983A
Authority: KR
Inventors: 강종현
Original assignee: 태주공업 주식회사
Priority date: 2016-04-25
Filing date: 2016-04-25
Publication date: 2016-09-08

Abstract

The present invention relates to a lamp head for a street lamp. More specifically, the present invention relates to a lamp head for a street lamp which can separately perform maintenance and repair operations on a light source module and a power module by introducing first and second covers individually opened and closed on the upper sides of first and second space units, prevents failure or malfunction caused by the penetration of rain water or the like in the power module weak for moisture by dividing the inside of a housing into the first space unit in which the light source module is mounted and the second space unit in which the power module is installed, with a partition, and can be easily manufactured and conveniently replace an inner component by unifying a hinge coupling structure of a lower housing and the first and second covers in one region.

Description

Lamp head for street lamp {LAMP HEAD FOR STREETLIGHT}

The present invention relates to a lamp head for street lamps,

More specifically, the first and second covers, which are individually opened and closed at the upper portions of the first and second space portions, can be introduced to separately perform the maintenance of the light source module and the power source module. The first space part and the second space part, in which the first space part and the second power source module are mounted, are partitioned into barrier ribs to prevent rain or the like from entering the power source module which is vulnerable to moisture, The present invention relates to a lamp head for a street lamp in which a coupling structure is unified in one area, and a lamp head is easily manufactured and internal parts are easily replaced.

In general, streetlight is a lighting facility installed along the street for the safety and security of road traffic. It is a lighting facility that is installed along the highway, the main road of the city area, the street of the commercial district, The kind corresponding to it is installed.

In the form of a streetlight, a highway type generally having a lamp at the end by bending the end of the landing bar, a bracket type having a ramp at the end of the crossing by connecting transversely to the end of the landing bar, And a main head type (lamp head type) equipped with a lamp.

Conventionally, mercury lamps or sodium lamps have been mainly used as light sources for street lamps. However, these lamps have a higher energy consumption and shorter life span than brightness lamps, resulting in a rapid decrease in light quantity over time, have.

In view of this, in recent years, a light source of at least one high brightness LED (Light Emitting Diode) has been used as a lamp to replace the lamp with an illumination light which can extend the life of the streetlight through the LED light source, Is being installed.

Although the LED light source has a longer lifetime than the other lamps described above, the lamp is configured by arranging a plurality of LED elements on the circuit board in order to use the LED light source as streetlight since the lamp unit is determined by a plurality of combinations of the LED elements .

As a related art related to the related arts, there are the registered patent 10-1428440, the registered patent 10-0941034, the registered patent 10-0632372, and the like. In the related art, the cover which can be opened and closed is coupled to the upper part of the single housing, A light source module and a power module for supplying power are incorporated together and assembled.

However, due to the characteristics of the street lamp installed outside the room, there is a great concern about water infiltration such as rainwater. Thus, in the case of the LED light source for the streetlight, the light source module is produced so as to have its own waterproof structure when it is produced.

On the contrary, in case of the power supply module for power supply, most general power module is used because there is no dedicated product for street light. However, since the water supply structure of the general power module currently supplied to the market is weak, This large,

Therefore, the waterproof structure of the housing for the lamp head for the power module is very important.

In addition, since most of the street lamps are formed on the lower side or the side surface of the lamp head for maintenance, the operation is inconvenient. In particular, in the case of the lower opening / closing structure, There is a problem that the operation is difficult.

Accordingly, the present invention has been made to solve the above-mentioned problems,

It is possible to prevent breakdown or malfunction due to invasion of rainwater or the like into the parts built in the lamp head, particularly to the power module which is vulnerable to moisture, and to perform maintenance of the light source module and the power source module individually, A lower housing having a first space portion in which the light source module is mounted, a second space in which the power module is mounted, the lower space being partitioned by the partition wall, and an upper portion of the first space portion and an upper portion of the second space portion, And an upper housing made of a first cover and a second cover.

The present invention also provides a hinge connection structure of a first cover and a second cover by unifying the first and second covers so that the first and second covers can be opened and closed with ease, The shaft projections and the shaft grooves formed on the shaft portion and the second and third shaft portions of the first and second covers are formed in a shape corresponding to the shaft projections and the shaft grooves of the other members so that the respective covers can be opened and closed at the upper portion of the lower housing And to provide a lamp head for a lamp.

In order to facilitate assembly and disassembly of the first and second covers which are hingedly coupled to the upper part of the partition and pivotally opened and closed at the upper part of the partition, the lower ends of the shaft grooves And a lamp head for a street lamp including an opening groove that is opened.

In addition, the present invention provides a lower housing through a combination of a first powder and a second powder such that the lamp head, particularly the lower housing, is easily manufactured and the water tightness of the second space is more easily assured, And it is an object of the present invention to provide a lamp head for a street lamp which is integrally provided in a second powder.

According to an aspect of the present invention, there is provided a lamp head for a street lamp,

A lower housing having a first space portion in which the light source module is mounted, a second space portion in which the power module is mounted, and a partition wall partitioning the first space portion and the second space portion; And

And an upper housing made of a first cover and a second cover hinged to the partition wall to open and close the first space part and the second space part, respectively.

In the lamp head lamp according to the present invention,

Wherein the partition wall includes a first shaft portion protruding from one side outer surface and a first shaft portion having a first shaft groove recessed on the other side surface,

Wherein either one of the first cover and the second cover has a second-1 axial groove formed by recessing the first axial projection on the one inner side surface, a second-1 axial projection formed on the one outer side surface, And a second shaft portion protruding from the inner side surface and having a second 2-axis projection projecting into the first shaft groove and a second 2-axis shaft recessed on the other side outer surface,

The other one of the first cover and the second cover is provided with a third shaft groove formed on one inner side surface and fitted with the second-1 -axis projection, and a second shaft groove formed on the other- And a third shaft portion having a third shaft projection to be fitted therein.

Further, in the lamp head lamp according to the present invention,

The first shaft groove, the second shaft-like groove, and the second shaft-

And an opening groove formed so that a lower end of each axial groove is opened so that an axial protrusion fitted in correspondence with each axial groove can pass therethrough,

And the third shaft groove includes an opening groove formed by opening an upper end of the third shaft groove so that the shaft protrusion to be inserted can pass therethrough.

In addition, in the lamp head lamp according to the present invention,

The lower housing comprises:

A first powder having the first space portion and a second powder having the second space portion are coupled to each other,

And the partition is integrated with the first powder or the second powder.

A lamp head lamp head according to the present invention comprises:

The cover can be opened and closed at the upper portion of the lower housing to advantageously secure the posture in the maintenance work so that the operation can be carried out easily and quickly and the component can be prevented from falling due to carelessness,

In particular, when a maintenance work is performed by opening the lower portion of the lamp head like a conventional street lamp, there is a great risk that an operator may be injured by a falling component during the operation. On the other hand, The above-described risk can be prevented in advance,

The first space portion in which the light source module is mounted and the second space portion in which the power module is mounted are partitioned from each other so that the watertightness of the second cover and the second space portion, It is possible to safely protect the power module having a weak waterproof structure and thus it is unnecessary to develop a power module having a waterproof structure for a street light, so that a ready-made product circulated in the market can be used,

It is possible to open only the parts requiring maintenance by opening and closing the first and second covers individually, thereby facilitating the maintenance work of the lamp head,

The unified hinge structure of the first and second covers enables easy opening and closing of the first and second covers and the engagement of the first and second covers to be firmly maintained,

By constructing the lower housing through the combination of the first powder and the second powder, it is easy to manufacture the lamp head, and the partition walls are integrated with the first powder or the second powder, thereby securing the watertightness of the second space.

1 is an assembled perspective view of a lamp head according to the present invention.
2 and 3 are exploded perspective views of a lamp head according to the present invention.
4 is a side view of the lamp head according to the present invention.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be understood that the first to second aspects described in the present specification are merely referred to in order to distinguish between different components and are not limited to the order in which they are manufactured, It may not match.

1 and 2, the direction in which the light source module L is mounted is defined as a front face, and the front face The direction of gravity acting on the basis of the viewing direction is set as the downward direction, and the direction is specified according to this standard, unless otherwise specified in the detailed description and claims of the invention relating to other drawings. do.

Hereinafter, a lamp head lamp according to the present invention will be described with reference to the accompanying drawings.

[A] of FIG. 1, which is an assembled perspective view of the present invention viewed from the front lower side, [B] of FIG. 1 which is an assembled perspective view of the present invention viewed from the upper rear side, 2 and 3, which are exploded perspective views, and FIG. 4, a side view of the present invention,

A lamp head for a street lamp according to the present invention includes a lower housing 10 coupled to a transverse P of a strut and mounted with a light source module L and a power module (not shown) And an upper housing 20 provided on the upper housing 20.

The lower housing 10 has an inner space 11s (12s) surrounded by a bottom surface and outer walls in the form of an opened top surface,

The upper housing 20 is coupled to the upper portion of the lower housing 10 to be openable and closable.

In particular, as the upper housing 20 of the present invention introduces the first and second covers 21 and 25 which are pivotally opened and closed at the upper portion of the lower housing 10,

It is advantageous in assuring the posture in the maintenance work, so that the work can be carried out easily and quickly, and the parts can be prevented from falling due to carelessness of the worker during the work,

In particular, when a maintenance work is performed by opening the lower portion of the lamp head like a conventional street lamp, there is a great risk that an operator may be injured by a worker falling down during the operation. On the other hand, The above-described risks can be prevented in advance through the first and second connectors 21 and 25.

The light source module L includes a PCB having a plurality of LED elements mounted thereon. The light source module L has a plurality of heat sinks for air cooling and is manufactured to have a self-sealing structure.

A power module not shown in the drawing is used to supply power to the light source module L, and generally known power modules used in various electronic products can be used, and there is no particular limitation.

Therefore, compared with the light source module (L) having a waterproof structure for streetlight use, the power source module is vulnerable to moisture, and maintenance of the light source module (L) such as partial replacement of the LED element And the heat dissipating holes 19 and 24 for cooling the light source module L by air cooling are formed as described later,

When the light source module L and the power module are integrated together in the inner space of the lower housing 10, there is a high risk that the moisture penetrated into the lamp head will invade the power module,

As described above, since the waterproof structure of the power module is weaker than the light source module L, there is a problem that failure or malfunction of the power module due to moisture invasion occurs easily.

In order to solve the above problems,

The lower housing 10 of the present invention has a first space portion 11s in which the light source module L is mounted and a second space portion 12s in which the power source module is mounted, The partition wall 13 is formed so as to extend transversely to the left and right so that the first space portion 11s and the second space portion 12s are partitioned so as to be isolated from each other, So as not to be infiltrated into the portion 12s,

The upper housing 20 of the present invention is constituted by a first cover 21 and a second cover 25 which can open and close the first space portion 11s and the second space portion 12s, The maintenance work of the light source module L and the power source module can be performed individually and only the first cover 21 is opened and operated for the light source module L having a relatively high maintenance frequency, It is possible to minimize the exposure and prevent the waterproof structure from being weakened.

Particularly, the first and second covers 21 and 25 of the present invention are hinged to the upper part of the lower housing 10 (more precisely, the upper part of the partition 13), and each cover is pivotally opened and closed upward So that it is more advantageous in securing the posture during the operation, and it is possible to prevent the risk of falling of the part during the operation.

In this case, the lower housing 10 can be manufactured by integrating the first space portion 11s and the second space portion 12s partitioned by the partition 13 into one member,

A first powder 11 having a first space portion 11s and a second powder portion 11b having a first space 11s are provided so as to more firmly ensure the sealing structure through the partition wall 13 and to facilitate the manufacture of the lower housing 10, And the second powder 12 having the second space 12s are mutually coupled to constitute the lower housing 10,

The partition 13 is integrally connected to the rear end of the first powder 11 or the front end of the second powder 12,

The rear end of the first body 11 without the partition 13 or the front end of the second powder 12 is open.

Since the first space portion 11s and the second space portion 12s are partitioned by the partition wall 13, the wiring (not shown) of the power module mounted on the second space portion 12s is divided into the first space A wiring hole 15 is formed in the partition wall 13 so as to be connected to the light source module L mounted on the part 11s,

The wiring hole 15 may be provided with a packing member (not shown) for ensuring watertightness between the wiring and the wiring hole 15. [

The packing member may be formed of a packing ring made of a flexible material such as rubber or silicone that can be brought into close contact with the outer peripheral surface of the wiring.

It is more preferable that the partition wall 13 is integrally formed at the front end portion of the second powder 12 in order to secure the water tightness of the second space portion 12s.

Also for the second cover 25 and the second powder 12, which are relatively more watertight than the first cover 21 and the first powder 11,

The second powder (12) includes a fitting projection (16) formed upwardly along an outer wall surrounding the second space (12s)

The second cover 25 includes a fitting groove portion 27 corresponding to the fitting projection portion 16 and recessed along the lower edge of the lower cover 25 to insert the fitting projection portion 16,

The fitting groove 27 may further include a packing member (not shown) for ensuring watertightness of the second space 12s.

The packing member may be a packing ring made of a flexible material such as rubber or silicone, which can be in close contact with the inner and outer surfaces of the fitting projection 16.

The first cover 21 and the second cover 25 constituting the upper housing 20 are formed in a shape corresponding to the opened upper surfaces of the first powder 11 and the second powder 12, There is no limitation on the open and closed structure of the covers 21 and 25 and the powders 11 and 12,

The first and second covers 21 and 25 are hinged to the lower housing 10 so that the covers 21 and 25 are individually pivotally opened and closed so that the maintenance work of the light source module L, So that the maintenance work of the apparatus can be carried out individually.

Further, the hinge-connecting portions of the first and second covers 21 and 25 can be unified into one portion, the lamp head can be easily manufactured, and the first and second covers 21 and 25 can be easily assembled and separated So that the sealing and engagement of the first and second covers 21 and 25 can be more firmly maintained,

A first shaft portion 14 functioning as a hinge shaft for pivotally opening and closing the first and second covers 21 and 25 is formed on the partition wall 13 and a rear end portion A second shaft portion 26 and a third shaft portion 23 are formed at the front end portion of the second cover 25 so as to be coupled to the first shaft portion 14, respectively.

Hereinafter, the hinge connection structure of the first to third shaft portions 14, 26 and 23 will be described in detail with reference to the drawings. However, the structure of the third shaft portion 23 formed on the first cover 21, The specific structure of the second shaft portion 26 formed on the cover 25 can be reversed differently from the drawing.

That is, the second shaft portion 26 shown in the drawing is provided in either the first cover 21 or the second cover 25, and the third shaft portion 23 shown in the figure corresponds to the second shaft portion 26 or the first cover 21 and the second cover 25,

The first shaft portion 14 provided on the partition wall 13 includes a first shaft projection 14A protruding from one side outer surface and a first shaft groove 14B recessed from the other side surface,

The second shaft portion 26 of the second cover 25 includes a second-1-axis groove 26A having a concave portion formed on one inner side surface thereof, a second-1-axis projection 26B formed on one outer side surface thereof, A second biaxial projection 26C protruding from the other inner side surface, and a second biaxial groove 26D formed on the other side outer surface,

The third shaft portion 23 of the first cover 21 includes a third shaft groove 23A formed on one inner side and a third shaft projection 23B formed on one inner side surface In Figure 2, a first shaft portion 14 corresponding to the other shaft portions 26, 23, denoted by reference numerals in the two first shaft portions 14, The positions of the first shaft portion 14 and the protrusions 14A and 14B shown in Fig. 3 are opposite to each other)

When the second cover 25 is assembled to the upper portion of the second powder 12, the first axial projection 14A of the first shaft portion 14 is engaged with the second-1 axial groove (not shown) of the second shaft portion 26 26A of the second shaft portion 26 and the second-2-axis projection 26C of the second shaft portion 26 is engaged with the first shaft groove 14B of the second shaft portion 26,

When the first cover 21 is assembled to the upper portion of the first powder 11, the second-first-axis projection 26B of the second shaft portion 26 is engaged with the third shaft portion 23 of the third shaft portion 23 23A of the second shaft portion 26 and the third axial projection 23B of the third shaft portion 23 is fitted in the second-2 axial groove 26D of the second shaft portion 26,

The shaft portions 26 and 23 of the first and second covers 21 and 25 are sequentially and simultaneously coupled to the first shaft portion 14 of the partition wall 13. [

The single hinge coupling structure of the first to third shaft portions 14, 26 and 23 simplifies the hinge coupling structure and is easy to manufacture, and at the same time, when the first and second covers 21 and 25 are pivotally opened and closed, (26) and (23) are not interfered with each other,

Particularly, when the third shaft portion 23 is provided on the first cover 21 and the second shaft portion 26 is provided on the second cover 25, the third shaft portion 23 of the first cover 21 The closed state of the second cover 25 is more firmly held by restraining the second shaft portion 26 of the second cover 25 so that the water tightness between the second cover 25 and the second powder 12 is improved .

The present invention is also characterized in that the male and female coupling structures of the projections 14A, 26B, 26C, and 23B of the shaft portions 14, 26, and 23 and the grooves 14B, 26A, So that the hinge coupling structure for opening and closing the cover can be stably balanced in the left and right directions.

In order to assemble and separate the shaft portions 14, 26 and 23,

The first shaft groove 14B, the second-first shaft groove 26A, and the second shaft-like second groove 26D are both formed of a single-

26A and 26D so that the shaft protrusions 26C, 14A and 23B fitted in correspondence with the respective shaft grooves 14B, 26A and 26D can pass therethrough, Grooves 14a, 26a, 26b,

The third shaft groove 23A includes an opening groove 23a formed by opening an upper end of the third shaft groove 23A so that the shaft projection 26B to be inserted can pass therethrough.

The widths of the opening grooves 14a, 26a, 26b and 23a are preferably equal to the thicknesses (diameters) of the shaft protrusions sandwiched by the respective shaft grooves,

It is more preferable that the width of the opening grooves 14a, 26a, 26b and 23a is formed to be slightly smaller than the thickness (diameter) of the projections, so that the shaft projections are assembled in a constricted manner in the axial grooves.

The protrusions 14A and 26C of the first and second shaft portions 14 and 26 can be fitted into the grooves 26A and 14B of the other shaft portion only when the second cover 25 is turned upside down, The positions of the opening grooves 14a and 26a of the first and second shaft portions 14 and 26 are formed to be opposite to each other in a state where the second cover 25 closes the second space portion 12s The projections 14A and 26C are not separated.

The first cover 21 is arranged so that the third shaft portion 23 is disposed on the lower side of the second shaft portion 26 and then the third shaft portion 23 is pushed upward so that the second and third shaft portions 26 The protrusions 26B and 23B of the first space 21 can be fitted into the grooves 23A and 26D of the other shaft portion and the first cover 21 closes the first space portion 11s after assembly The positions of the opening grooves 26b and 23a of the second and third shaft portions 26 and 23 are formed in the opposite upper and lower directions so that the protrusions 26B and 23B are not separated and the first cover 21 The first cover 21 can be easily separated by aligning the positions of the opening grooves 26b and 23a of the second and third shaft portions 26 and 23 in the same direction.

Therefore, in the case of the light source module L having a relatively high frequency of maintenance work, the first cover 21 opened for work can be easily attached and detached,

In the case of the power module having a relatively low frequency of maintenance work, the second cover 25 is disposed on the second powder 12 (except for the state in which the second cover 25 is completely opened after the first cover 21 is removed) ). &Lt; / RTI >

On the other hand, in the case of the light source module L mounted on the first space portion 11s, air cooling using the heat sink is required due to temperature rise due to lighting,

The first powder 11 and the second cover 25 of the present invention include the heat dissipating holes 19 and 24 formed so as to pass air between the first space portion 11s and the outside.

There is no limitation on the size and the number of the heat dissipating holes 19 and 24. However, as shown in the figure, the heat dissipating holes 19 and 24 are formed on the bottom surface of the first powder 11 and on both sides of the first cover 21, It is more advantageous for the air circulation to be formed so as to have a predetermined length.

In order to prevent the rainwater from directly coming into contact with the light source module L of the first space portion 11s through the heat dissipating holes 19 and 24,

The first heat dissipating hole 24 formed in the first cover 21 has a connecting portion 24a connected from the inner end to the lower end and a receiving portion 24b bent outward from the end portion of the connecting portion 24a

The second heat dissipating hole 19 formed on the bottom surface of the first powder 11 has an inclined portion 19a which is connected to the outer lower portion of the second end portion of the first powder 11,

Moisture such as rainwater infiltrating into the first heat-dissipating hole 24 is allowed to drip without contacting the light source module L by the receiving portion 24b,

The moisture dropped in the first heat dissipating hole 24 can be guided to the second heat dissipating hole 19 by the inclined portion 19a and discharged to the outside of the first space portion 11s.

1 and 3, reference numeral 17 denotes a coupling hole in which the pitch P of the support is inserted into the lamp head,

3 is a pair of coupling pieces 18 for coupling the first powder 11 and the second powder 12 and a pair of coupling pieces 18 projecting from the front end of the second powder 12, A bolt member (not shown) is disposed between the outer wall of the first powder 11 and the engaging piece 18 of the second powder 12 in a state where the first powder 11 is inserted into the open rear end of the first powder 11. [ So that the powders are bonded to each other.

Particularly, the engagement piece 18 supports the lower side of the third shaft portion 23 of the first cover 21 together with the outer walls of the first powder 11, so that the first cover 21 is rotated and opened The third shaft portion 23 is prevented from being released to the lower portion of the second shaft portion 26 so that the first cover 21 can be prevented from being unintentionally easily separated.

Therefore, the present invention is not limited to the first and second covers (21, 25) which are not only convenient for maintenance work but also capable of being detached and attached through the first and second covers (21, 25) pivotally opened and closed at the upper portion of the lower housing 21) 25 are not easily separated from each other, it is possible to reduce falling of the cover or the parts used for the operation during the operation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the exemplary embodiments, but, on the contrary, Should be construed as falling within the scope of protection of the present invention.

L: Light source module
10: Lower housing 11, 12: Powder
11s, 12s: space part 13: partition wall
15: wiring hole 16:
17: coupling hole 18: coupling piece
20: upper housing 21, 25: cover
27: fitting groove
14, 23, 26: Shafts 14A, 23B, 26B, 26C:
14B, 23A, 26A, 26D: grooves 14a, 23a, 26a, 26b:
19, 24: heat radiation hole 19a: inclined portion
24a: connection portion 24b:

Claims

A lower housing having a first space portion in which the light source module is mounted, a second space portion in which the power module is mounted, and a partition wall partitioning the first space portion and the second space portion; And
And an upper housing formed of a first cover and a second cover hinged to the partition wall to open and close the first space part and the second space part, respectively,
Wherein the partition wall includes a first shaft portion protruding from one side outer surface and a first shaft portion having a first shaft groove recessed on the other side surface,
Wherein either one of the first cover and the second cover has a second-1 axial groove formed by recessing the first axial projection on the one inner side surface, a second-1 axial projection formed on the one outer side surface, And a second shaft portion protruding from the inner side surface and having a second 2-axis projection projecting into the first shaft groove and a second 2-axis shaft recessed on the other side outer surface,
The other one of the first cover and the second cover is provided with a third shaft groove formed on one inner side surface and fitted with the second-1 -axis projection, and a second shaft groove formed on the other- And a third shaft portion having a third shaft projection fitted in the third shaft portion.

The method according to claim 1,
In order that the wiring of the power module may be connected to the light source module,
Wherein the wiring hole is provided with a packing member for ensuring watertightness between the wiring and the wiring hole.

3. The method of claim 2,
The first shaft groove, the second shaft-like groove, and the second shaft-
And an opening groove formed so that a lower end of each axial groove is opened so that an axial protrusion fitted in correspondence with each axial groove can pass therethrough,
Wherein the third shaft groove includes an opening groove formed so that an upper end of the third shaft groove is opened so as to allow the shaft projection to be inserted to pass therethrough.

4. The method according to any one of claims 1 to 3,
The lower housing comprises:
A first powder having the first space portion and a second powder having the second space portion are coupled to each other,
Wherein the partition wall is integrally formed with the first powder or the second powder.