Lighting device

Abstract

A lighting device according to an embodiment of the present invention comprises: a body portion including a lens at which light is emitted; a first part which is disposed to surround the body portion, and of which a part extends to the outside of the body portion; a second part which is coupled to one side of the body portion that does not overlap the first part, and of which a part extends to the outside of the body portion; and a heat dissipation unit for fixing the first part and the second part, wherein the first part and the second part are coupled on the outside of the body portion, and the heat dissipation unit is attached to the body portion surface, which is in contact with the first part or the second part.

Description

lighting equipment

[0001] The present invention relates to a lighting device.

[0002] Conventional multi-channel optical engine devices can output screens such as projectors or displays by mixing red light, green light, and blue light to obtain white and bright color images, and multi-channel optical engine devices are frequently used in the above-described projectors.

[0003] In the process of arranging light sources to mix red, green, and blue light, the endpoints of the optical paths must be the same or have minimal errors in order for each light to be mixed.

[0004] However, due to the nature of light, it is somewhat difficult to adjust the error of the end point of the optical path, and in particular, it becomes more difficult to adjust the error of the end point of the optical path due to errors or shaking that occur during the manufacturing process, and errors caused by temperature can also cause errors in the end point of the optical path, so there may be a disadvantage in that it is difficult to achieve high efficiency.

[0005] Therefore, a means is needed to address the problem of performance degradation due to temperature while also adjusting for errors or vibrations that occur during the manufacturing process.

[0006] The present invention is an invention devised to solve the problems of the above-described prior art, and has as its object the fixation of the first part, the second part, and the third part, and the prevention of performance degradation due to temperature.

[0007] The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the description below.

[0008] According to an embodiment of the present invention for achieving the above-described object, a lighting device includes a body part including a lens through which light is irradiated, a first part arranged to surround the body part and a portion of which extends outwardly of the body part, a second part coupled to a side of the body part that does not overlap with the first part and a portion of which extends outwardly of the body part, and a heat dissipation part that fixes the first part and the second part, wherein the first part and the second part are coupled to each other on the outside of the body part, and the heat dissipation part is attached along a surface of the body part that is in contact with the first part or the second part.

[0009] Here, the first part may include a first coupling portion coupled to one surface of the body portion, a first joint portion coupled to the second part, and a first connecting portion connecting the first coupling portion and the first joint portion.

[0010] In addition, the first connecting portion includes a front end positioned on a first surface of the body portion to which the first connecting portion is coupled, a middle portion bent from the first surface and positioned on a second surface adjacent to the first surface, and a rear end portion extending outward from the middle portion of the body portion, and the first surfaces may be formed as a pair facing each other with respect to the body portion.

[0011] At this time, the first part may include a first member arranged to surround the second side on one of the first sides and a second member arranged to surround the second side on the other of the first sides.

[0012] Here, the middle part of the first member and the middle part of the second member can overlap each other in the outward direction of the body part.

[0013] In addition, the second part may include a second connecting portion connected to a side of the body portion that is not shared with the first part, a second connecting portion connected to the first connecting portion, and a second connecting portion connecting the second connecting portion and the second connecting portion.

[0014] Additionally, the first joint of the first member may be coupled to one side of the second joint, and the first joint of the second member may be coupled to the other side of the second joint.

[0015] In addition, an area may be formed on the outside of the body portion where the first connecting portion and the second connecting portion are arranged to face each other, and in the area, the first connecting portion of the first member may be arranged to face one side of the second connecting portion, and the second connecting portion of the second member may be arranged to face the other side of the second connecting portion.

[0016] Meanwhile, the first member can irradiate a first light to the inside of the body part, the second member can irradiate a second light to the inside of the body part, and the second part can irradiate a third light to the inside of the body part.

[0017] Here, the second part can irradiate the third light toward the inside of the body portion in the opposite direction to the lens.

[0018] Meanwhile, the heat dissipation part may include an opening through which a portion of the first part and the second part penetrate.

[0019] A lighting device according to an embodiment of the present invention for solving the above problem can have the effect of fixing the first part, the second part, and the third part and preventing performance degradation due to temperature.

[0020] The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0021] In addition, the effects of the present invention may be described in more detail in the detailed description of the present invention, and may not necessarily be limited to what is presented above.

[0022] The summary set forth above, as well as the detailed description of preferred embodiments of the present application described below, will be better understood when read in conjunction with the accompanying drawings.

[0023] For the purpose of illustrating the present invention, preferred embodiments are shown in the drawings.

[0024] However, it should be understood that the present application is not limited to the precise arrangements and means illustrated.

[0025] FIG. 1 is a drawing illustrating the overall appearance of a lighting device according to one embodiment of the present invention;

[0026] FIG. 2 is a drawing illustrating the overall configuration of a lighting device according to one embodiment of the present invention;

[0027] FIG. 3 is a drawing illustrating a body portion of a lighting device according to one embodiment of the present invention;

[0028] FIG. 4 is a drawing showing a state in which the body part and the third part of a lighting device according to one embodiment of the present invention are combined;

[0029] FIG. 5 is a drawing showing a state in which the body, first part, and third part of a lighting device according to one embodiment of the present invention are combined;

[0030] FIG. 6 is a drawing showing the second part of a lighting device according to one embodiment of the present invention being combined;

[0031] FIG. 7 is a drawing illustrating a state in which the first to third parts of a lighting device according to one embodiment of the present invention are combined; and

[0032] FIG. 8 is a drawing illustrating a heat dissipation unit of a lighting device according to one embodiment of the present invention.

[0033] The present invention is susceptible to various modifications and embodiments, and specific embodiments are illustrated and described in detail in the drawings. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. In describing the present invention, detailed descriptions of related known technologies will be omitted if they are deemed to obscure the gist of the present invention.

[0034] Terms such as first, second, etc. may be used to describe various components, but these components should not be limited by these terms. These terms are used solely to distinguish one component from another.

[0035] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprises" or "has" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0036] Additionally, throughout the specification, when we say "connected," this does not only mean that two or more components are directly connected, but also that two or more components are indirectly connected through other components, that they are electrically connected as well as physically connected, or that they are referred to by different names depending on location or function but are one.

[0037] Additionally, when described as being formed or arranged "above or below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below," it can include the meaning of a downward direction as well as an upward direction based on one component.

[0038] Hereinafter, preferred embodiments of the present invention, in which the purpose of the present invention can be specifically realized, will be described with reference to the attached drawings.

[0039] First, a lighting device according to an embodiment of the present invention can be generally described through FIGS. 1 to 3.

[0040] Specifically, FIG. 1 is a drawing illustrating the overall appearance of a lighting device according to one embodiment of the present invention, FIG. 2 is a drawing illustrating the overall configuration of a lighting device according to one embodiment of the present invention, and FIG. 3 is a drawing illustrating a body portion of a lighting device according to one embodiment of the present invention.

[0041] First, as illustrated in FIG. 1, a lighting device according to an embodiment of the present invention includes a body part (100) including a lens (L) through which light is irradiated, a first part (200) arranged to surround the body part (100) and having a portion extending outward from the body part (100), a second part (300) coupled to one side of the body part (100) that does not overlap with the first part (200) and having a portion extending outward from the body part (100), and a heat dissipation part (400) that fixes the first part (200) and the second part (300).

[0042] Here, the body part (100) may include a reference plane on which a lens (L) is placed, a second plane (102) placed in the opposite direction to the reference plane, a first plane (101) placed between the reference plane and the first plane (101), and a third plane (103) formed in a portion that does not overlap with the reference plane, the first plane (101), and the second plane (102).

[0043] In addition, the inside of the body part (100) may include an illumination optical system, and the light irradiated to the inside of the body part (100) by the first part (200) and the light irradiated to the inside of the body part (100) by the second part (300) may be irradiated as white light or bright colored light through a lens (L).

[0044] In addition, as described above, the first part (200) irradiates light to the inside of the body part (100), and the second part (300) can irradiate light of a different color from the first part (200) to the inside of the body part (100).

[0045] In addition, the first part (200) includes a first member (210) coupled to one of the first surfaces (101) and a second member (220) coupled to the other of the first surfaces (101), and the first member (210) can irradiate the first light to the inside of the body part (100), and the second member (220) can irradiate the second light to the inside of the body part (100).

[0046] Additionally, the first member (210) and the second member (220) can be combined with the second part (300) on the outside of the body part (100).

[0047] Here, the inside of the body part (100) means a direction facing the inside of the body part (100), the outside of the body part (100) means a direction facing the outside of the body part (100), and combining at the outside of the body part (100) means combining with each other at the outside of the boundary of the body part (100), and the first to third lights being irradiated to the inside of the body part (100) may mean being irradiated to the inside of the body part (100) as shown in FIG. 1.

[0048] Meanwhile, the lens (L) can allow mixed light to be irradiated to the outside through the illumination optical system inside the body (100), and can be placed on the reference plane of the body (100). Here, the body (100) can take a shape similar to a rectangle or a square as described above, but is not necessarily limited thereto.

[0049] In addition, the heat dissipation unit (400) may be arranged across the first surface (101), the second surface (102), and the third surface (103), and may be in contact with one side of the first part (200) and the second part (300), and a part of the first part (200) and the second part (300) may be arranged between the heat dissipation unit (400) and the body part (100).

[0050] At this time, the heat dissipation unit (400) is arranged to fix the first member (210) and the second member (220) that overlap each other on the second surface (102), and in addition, the heat dissipation unit (400) can conduct the heat of the first member (210) and the second member (220) that irradiate the first light and the second light so that it can be quickly discharged to the outside.

[0051] That is, the heat dissipation member (400) may be an adhesive material such as tape, but may also be formed of a material with high thermal conductivity such as graphite to quickly discharge heat generated from the first part (200) and the second part (300) to the outside, thereby effectively preventing deterioration in the performance of the equipment.

[0052] In addition, as will be explained through the drawings to be described later, the heat dissipation unit (400) may include a first part passing through a second side (102) in a direction from one first side (101) toward another first side (101) and a second part passing through a third side (103) in a direction from one first side (101) toward another first side (101), and the first part and the second part may take a combined folded shape and be attached to each other in an overlapping manner only on one of the first sides (101), and may not necessarily be limited to what has been mentioned.

[0053] Meanwhile, referring to FIGS. 2 and 3 to specifically explain each configuration and shape, as shown in FIG. 2, the body part (100) has a lens (L) formed on a reference surface, a first member (210) is arranged on one first surface (101), a second member (220) is arranged on the other first surface (101), the first member (210) and the second member (220) overlap each other on the second surface (102), and a second part (300) can be arranged on the third surface (103).

[0054] Here, the first member (210) and the second member (220) of the first part (200) may include a first connecting portion (211, 221) connected to the first surface (101), a first joint portion (213, 223) connected to the second part (300), and a first connecting portion (212, 222) connecting the first connecting portion (211, 221) and the first joint portion (213, 223), and for a clearer understanding, the first member (210) is described as a first-first connecting portion (211), a first-first connecting portion (213), and a first-first connecting portion (212), and the second member (220) is described as a first-second connecting portion (221), a first-second connecting portion (223), and a first-second connecting portion (222).

[0055] In addition, the second part (300) may include a second connecting portion (231) that is connected to one side of the body portion (100) that is not shared with the first part (200), a second connecting portion (233) that is connected to the first-first connecting portion (213) and the first-second connecting portion (223), and a second connecting portion (232) that connects the second connecting portion (231) and the second connecting portion (233).

[0056] In addition, the first connecting portion (212, 222) includes a front portion (212a, 222a), a middle portion (212b, 222b), and a rear portion (212c, 222c). The front portion (212a, 222a) is positioned on the first surface (101) of the body portion (100), the middle portion (212b, 222b) is bent from the first surface (101) and positioned on the second surface (102) adjacent to the first surface (101), and the rear portion (212c, 222c) can extend outward from the middle portion (212b, 222b) of the body portion (100).

[0057] At this time, in order to help a clear understanding of the invention, the 1-1 connecting portion (212) will be described as a first front end portion (212a), a first middle portion (212b), and a first rear end portion (212c), and the 1-2 connecting portion (222) will be described as a second front end portion (222a), a second middle portion (222b), and a second rear end portion (222c).

[0058] Meanwhile, before a specific description of the first part (200) and the second part (300) described above, reference may be made to FIG. 3 for a specific description of each surface of the body portion (100). Here, the description of each surface of the body portion (100) is not intended to limit the arrangement and shape of each surface, but rather to facilitate a clearer understanding of the arrangement structure of the first part (200) and the second part (300). In addition, even if the names of the surfaces are swapped with respect to the first surface (101), the second surface (102), the third surface (103) and the reference surface, if they have the same arrangement as the lighting device of the embodiment of the present invention in terms of their arrangement relationships, they should be interpreted as having a similar meaning, and may not necessarily be limited to the mentioned names and arrangements.

[0059] Here, as illustrated in FIG. 3, the body part (100) includes a first surface (101), a second surface (102), a third surface (103), and a reference surface on which a lens (L) is placed. The first surfaces (101) are provided in pairs facing each other with respect to the body part (100), the second surface (102) is one surface between the pair of first surfaces (101), and the third surface (103) may mean a bottom surface facing the reference surface.

[0060] At this time, a plurality of grooves (102a) that are sunken inwardly of the body part (100) may be formed on the second surface (102), and a guide part (102b) that protrudes outwardly away from the body part (100) may be formed between the plurality of grooves (102a).

[0061] Here, the lens (L) placed on the reference plane can be placed relatively far from the second plane (102) on the reference plane by a plurality of grooves (102a) formed on the second plane (102), and the second plane (102) can mean a plane that is placed relatively far from the lens (L) on a pair of planes excluding a pair of first planes (101) connected to the reference plane.

[0062] Here, the plurality of grooves (102a) formed on the second surface (102) can allow heat generated in the body portion (100) or the first-first connecting portion (211), the first-second connecting portion (221), or the second connecting portion (231) to be discharged more effectively in the process of being transmitted through the first-first connecting portion (212), the first-second connecting portion (222), and the second connecting portion (232), and can improve the durability of the equipment by increasing the efficiency of heat discharge of the first-first connecting portion (212) and the first-second connecting portion (222) located on the second surface (102).

[0063] In addition, the guide portion (102b) is formed between a plurality of grooves (102a), and is formed on the upper portion of the second surface (102), that is, on the upper portion adjacent to the reference surface, and is formed to protrude in a direction away from the body portion (100), thereby preventing the first-first connecting portion (212) and the first-second connecting portion (222) arranged on the second surface (102) from being separated from the upper portion.

[0064] At this time, a separate guide groove in which a guide portion (102b) is positioned can be formed in the first-first connecting portion (212) and the first-second connecting portion (222), and the guide portion (102b) can be inserted into the guide groove to position the first-first connecting portion (212) and the first-second connecting portion (222), thereby improving the fixing force on the second surface (102) where the fixing force is relatively weak.

[0065] In addition, the third side (103) is positioned between a pair of first sides (101) to face the reference side, and may alternatively mean a side in the opposite direction from the reference side.

[0066] In addition, although not shown, a separate structure may be formed on a pair of first surfaces (101) and third surfaces (103) for coupling the first-first coupling portion (211), the first-second coupling portion (221), and the second coupling portion (231), respectively, and a separate hole may be formed or a structure may be formed so that the first light irradiated by the first-first coupling portion (211), the second light irradiated by the first-second coupling portion (221), and the third light irradiated by the second coupling portion (231) move to an illumination optical system formed inside the body portion (100). This is merely an example to help understanding of the invention and may not necessarily be limited thereto.

[0067] Meanwhile, in order to explain in more detail the combination process, arrangement, and structure of the lighting device according to the embodiment of the present invention, reference may be made to FIGS. 4 to 8.

[0068] Specifically, FIG. 4 is a drawing showing a state in which a body part and a third part of a lighting device according to an embodiment of the present invention are combined, FIG. 5 is a drawing showing a state in which a body part, a first part, and a third part of a lighting device according to an embodiment of the present invention are combined, FIG. 6 is a drawing showing a state in which a second part of a lighting device according to an embodiment of the present invention is combined, FIG. 7 is a drawing for explaining a state in which the first part to the third part of a lighting device according to an embodiment of the present invention are combined, and FIG. 8 is a drawing for explaining a heat dissipation part of a lighting device according to an embodiment of the present invention.

[0069] First, as illustrated in FIG. 4, in the lighting device according to the embodiment of the present invention, the second part (300) may be preferentially coupled to the body part (100). Here, the third light irradiated by the second part (300) may correspond to green light, and by preferentially coupling the second part (300) as a reference, the first member (210) and the second member (220) may be positioned more clearly, thereby preventing errors and misalignments occurring inside the body part (100).

[0070] More specifically, in the past, the space where the second part (300) is combined and the space where the first part (200) is combined were separated from each other, and after combining the first part (200), the lighting device was moved to combine the second part (300), so that there was an error occurring during the manufacturing process between the first light, the second light, and the third light irradiated by the first part (200) and the second part (300). However, the lighting device according to the embodiment of the present invention performs the combining space of the first part (200) and the combining space of the second part (300) in the same space, and forms a reference by preferentially combining the second part (300), thereby preventing an error in the combining process described above.

[0071] Here, the second connecting portion (231) is connected to the third surface (103), and the second connecting portion (232) may be divided into a region in which some areas contact the third surface (103) and some areas do not contact the third surface (103) and extend outwardly of the body portion (100), and the region in which the second connecting portion (232) does not contact the third surface (103) and extends outwardly of the body portion (100) may overlap with the first rear end (212c) and the second rear end (222c) of the first part (200) in the direction toward the lens (L) on the third surface (103). This will be described in more detail with reference to the drawings to be described later.

[0072] Meanwhile, after combining the second part (300) as shown in Fig. 4, the first member (210) can be preferentially combined as shown in Fig. 5. Here, among a pair of first surfaces (101), the first surface (101) to which the 1-1 connecting portion (211) is combined is defined as the 1-1 surface (101a), and the first surface (101) to which the 1-2 connecting portion (221) is combined is defined as the 1-2 surface (101b).

[0073] Here, the first member (210) may have a first-first connecting portion (211) connected to the first-first surface (101a), and a first-first connecting portion (212) extending to the outside of the body portion (100) via the first-first surface (101a) and the second surface (102). At this time, the first front end (212a) of the first-first connecting portion (212) may be an area that contacts the first-first surface (101a), the first middle portion (212b) may be an area that contacts the second surface (102), and the first rear end (212c) may be an area that extends from one side of the first middle portion (212b) to the outside of the body portion (100).

[0074] At this time, the first rear end (212c) may extend from the lower portion of the first intermediate portion (212b), but may extend from a portion adjacent to the 1-2 surface (101b). More specifically, the first rear end (212c) may extend from a lower portion of one side of the first intermediate portion (212b) so as to overlap only a portion of the guide portion (102b) in the direction toward the lens (L) on the third surface (103). That is, the 1-1 joint portion (213) arranged at the end of the first rear end portion (212c) may be arranged on one side of the second joint portion (233) and may be combined with the second joint portion (233). As a result, the first member (210) may be arranged in a form that surrounds the 1-1 surface (101a) and the second surface (102).

[0075] Meanwhile, after combining the first part (200) as shown in FIG. 5, the second member (220) can be combined as shown in FIG. 6.

[0076] Here, the second member (220) may have a first-second connecting portion (221) connected to the first-second surface (101b), and a first-second connecting portion (222) extending to the outside of the body portion (100) via the first-second surface (101b) and the second surface (102). At this time, the second front end (222a) of the first-second connecting portion (222) may be an area that contacts the first-second surface (101b), the second middle portion (222b) may be an area that contacts the first middle portion (212b) arranged on the second surface (102), and the second rear end (222c) may be an area that extends to the outside of the body portion (100) from one side of the second middle portion (222b).

[0077] At this time, the second rear end (222c) may extend from the lower portion of the second intermediate portion (222b), but may extend from a portion adjacent to the 1-1 surface (101a). More specifically, the second rear end (222c) may extend from a lower portion of one side of the second intermediate portion (222b) so as to overlap only a portion of the guide portion (102b) in the direction toward the lens (L) on the third surface (103). That is, the 1-2 joint portion (223) arranged at the end of the second rear end portion (222c) may be arranged on the other side of the second joint portion (233) and may be combined with the second joint portion (233). As a result, the second member (220) may be arranged in a form that surrounds the 1-2 surface (101b) and the second surface (102).

[0078] In addition, as illustrated in FIG. 7, the first rear end (212c) and the second rear end (222c) are arranged so as not to overlap in the outward direction of the body part (100), and the area where the first rear end (212c) extends from the first middle part (212b) and the area where the second rear end (222c) extends from the second middle part (222b) may also be arranged so as not to overlap in the outward direction of the body part (100).

[0079] Meanwhile, a first rear end (212c) and a second rear end (222c) are arranged on the upper side of the second connecting portion (232), and the total length in the direction from the first rear end (212c) toward the second rear end (222c) may be greater than the length of the second connecting portion (232). To put it differently, the area where the first rear end (212c) overlaps the second connecting portion (232) may be a portion, and the area where the second rear end (222c) overlaps the second connecting portion (232) may also be a portion.

[0080] Alternatively, an area is formed on the outside of the body portion (100) where the first-first connecting portion (212), the first-second connecting portion (222), and the second connecting portion (232) are arranged to face each other, and in the area where they are arranged to face each other, the first-first connecting portion (212) is arranged to face one side of the second connecting portion (232), and the first-second connecting portion (222) is arranged to face the other side of the second connecting portion (232). More specifically, in the area where they are arranged to face each other, the first rear end (212c) and the second connecting portion (232) may be arranged to face each other on one side, and the second rear end (222c) may be arranged to face the other side of the second connecting portion (232).

[0081] In addition, the second part (300) ultimately takes a form that is formed long in one direction, but in the case of the first part (200), the unfolded form may be provided in a form that extends in one direction and then bends in a vertical direction. In a limited case, the unfolded form may be a shape similar to an "ㄱ". However, this is only a limited example of the most desirable form for performing the above-described arrangement form, and may not necessarily be limited thereto.

[0082] Meanwhile, as illustrated in FIG. 8, the first intermediate portion (212b) and the second intermediate portion (222b) may be arranged to overlap each other toward the outside of the body portion (100) with respect to the second surface (102), and finally, the first intermediate portion (212b), the second intermediate portion (222b), and the heat dissipation portion (400) may be arranged sequentially toward the outside of the body portion (100) with the heat dissipation portion (400) arranged.

[0083] In addition, the heat dissipation unit (400) may include a first side surface (401) that overlaps the second side surface (102) and the outer side of the body portion (100), a pair of second side surfaces (402) that overlap the first-first side surface (101a) and the first-second side surface (101b) in the outer side of the body portion (100), a pair of third side surfaces (403) that overlap the third side surface (103) in the outer side of the body portion (100), and a curved portion (404) that is arranged between the second side surface (402) and the third side surface (403), and an opening portion that the first-first connection portion (212), the first-second connection portion (222), and the second connection portion (232) pass through may be formed between the first side surface (401) and the third side surface (403).

[0084] Here, the first side (401) may serve to fix the first intermediate portion (212b) and the second intermediate portion (222b), but as described above, the heat generated at the first-first joining portion (211) and the first-second joining portion (221) that are joined to the first-first side (101a) and the first-second side (101b) may be transferred to the second side (402), and the heat of the second side (402) may be transferred to the first side (401), thereby allowing heat to be discharged more effectively.

[0085] In addition, the heat dissipation part (400) may be divided into a first part consisting of only a first side (401) and a second side (402) and a second part consisting of a second side (402), a third side (403) and a curved part (404), or may be formed as a single configuration including all of the first side (401), the second side (402), the third side (403) and the curved part (404).

[0086] Here, when the heat dissipation unit (400) is formed as a single configuration, the expansion shape is provided in a form that extends in one direction and bends in a vertical direction, and during the joining process, one end and the other end may be arranged to overlap on the 1-1 side (101a) or the 1-2 side (101b), and when the heat dissipation unit (400) is divided into a first part and a second part, one end of the first part and one end of the second part may overlap on the 1-1 side (101a) and the 1-2 side (101b), respectively, and the other end of the first part and the other end of the second part may be arranged to overlap.

[0087] In addition, the heat dissipation unit (400) according to the embodiment of the present invention not only performs the function of fixing the first intermediate portion (212b) and the second intermediate portion (222b), but also includes a function of conducting heat generated from the first-first coupling portion (211), the first-second coupling portion (221), and the second coupling portion (231) to quickly discharge the heat, so that it is arranged to overlap only the first-first surface (101a), the first-second surface (101b), the second surface (102), and the third surface (103) in the outer direction of the body portion (100), and surfaces of the body portion (100) other than the first-first surface (101a), the first-second surface (101b), the second surface (102), and the third surface (103) may not pass through or may not be arranged.

[0088] Through this, there may be an advantage of preventing heat generated in the first-first joint (211), the first-second joint (221), and the second joint (231) from being transferred to other surfaces of the body part (100), thereby improving the durability of the body part (100) and the efficiency and durability of the lighting optical system arranged inside the body part (100).

[0089] Having described preferred embodiments of the invention, it will be apparent to those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or scope thereof, in addition to the embodiments described above.

[0090] Therefore, the above-described embodiments should be considered as illustrative rather than restrictive, and accordingly, the present invention is not limited to the above description but may be modified within the scope of the appended claims and their equivalents.

Claims

1. A body part including a lens through which light is irradiated; A first part arranged to surround the body portion, a portion of which extends outward from the body portion; A second part coupled to one side of the body part that does not overlap with the first part, and a portion of which extends outward from the body part; Including a heat dissipation part that fixes the first part and the second part, The above first part and the above second part are connected to each other on the outside of the body portion, A lighting device in which the heat dissipation part is attached along the surface of the body part that comes into contact with the first part or the second part.

2. In paragraph 1, The above first part, A first connecting portion connected to one surface of the above body portion; a first joint coupled with the second part; and A lighting device comprising a first connecting portion connecting the first coupling portion and the first joint portion.

3. In paragraph 2, The above first connecting part is, A front end positioned on the first surface of the body part to which the first connecting portion is connected; An intermediate portion that is bent on the first surface and is positioned on a second surface adjacent to the first surface; and Including a rear end extending outward from the middle portion of the body portion, The above first surface is a lighting device in which a pair is formed facing each other based on the above body part.

4. In paragraph 3, The above first part, A first member arranged to surround the second surface on one of the first surfaces; and A lighting device comprising a second member arranged to surround the second surface on another first surface.

5. In paragraph 4, A lighting device in which the middle part of the first member and the middle part of the second member overlap each other in the outer direction of the body part.

6. In paragraph 4, The above second part, A second connecting portion connected to one side of the body portion that is not shared with the first part; a second joint joined to the first joint; and A lighting device comprising a second connecting portion connecting the second connecting portion and the second joint portion.

7. In paragraph 6, The first joint of the first member is joined to one side of the second joint, A lighting device in which the first joint of the second member is connected to the other side of the second joint.

8. In paragraph 6, An area is formed on the outside of the body portion where the first connecting portion and the second connecting portion are positioned facing each other, A lighting device in which the first connecting portion of the first member in the above region is arranged to face one side of the second connecting portion, and the second connecting portion of the second member is arranged to face the other side of the second connecting portion.

9. In paragraph 6, The above first member irradiates the first light to the inside of the body portion, The second member irradiates the second light to the inside of the body portion, The above second part is a lighting device that irradiates a third light to the inside of the body.

10. In paragraph 9, The second part is a lighting device that irradiates the third light toward the inside of the body in the opposite direction to the lens.

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