KR102485176B1 - Lamp module and head lamp comprising the same - Google Patents

Abstract

A lamp module according to an embodiment and a headlamp including the same include a flange, a base disposed on one side of the flange and including a first side surface and a second side surface, a first light emitting unit disposed on the first side surface, and the first light emitting unit disposed on the first side surface. It includes a second light emitting part disposed on two sides, the first side and the second side meet at a corner, form a first angle with each other, and a first distance from the flange to the first light emitting part is Disclosed is a lamp module shorter than a second distance to a second light emitting unit and a headlamp including the same.

Description

Lamp module and headlamp including the same {LAMP MODULE AND HEAD LAMP COMPRISING THE SAME}

The embodiment relates to a lamp module and a headlamp including the same.

In general, a vehicle is provided with various lamps for securing a driver's field of vision by irradiating light forward according to an external environment and time and informing other vehicles of a traveling route.

These lamps are classified according to the purpose of use. Headlamps for the purpose of illuminating the front, direction indicators for the purpose of securing the driver's vision and informing the location of the vehicle, along with headlamps in case of fog or rain, the driver's vision There are fog lights for securing and notifying the location of the vehicle, and reversing lights that turn on when the vehicle is in reverse.

Conventional vehicle lamps have mainly used halogen bulbs. When a halogen lamp is used as a light source, there is a reflector that reflects light emitted from the halogen lamp, and the reflected light is irradiated forward. However, although the halogen lamp has the advantage of being inexpensive, there are disadvantages of severe heat generation during use, low luminance compared to the amount of electricity used, and short lifespan.

In order to solve this problem, a vehicle lamp using a light emitting diode (LED) has emerged. LED lamps have high brightness, have a long lifespan, and have the advantage of being driven with low power.

However, conventional headlamps have a problem in that light distribution generated by a structure in which a plurality of LED light sources are emitted horizontally does not meet the required level.

The embodiment provides a lamp module having an improved light distribution level and a headlamp including the same.

In addition, a lamp module having improved heat dissipation characteristics and a headlamp including the same are provided.

In addition, a lamp module that satisfies the cutoff line and a headlamp including the lamp module are provided.

The problem to be solved in the embodiment is not limited thereto, and it will be said that the solution to the problem described below or the purpose or effect that can be grasped from the embodiment is also included.

A lamp module according to an embodiment of the present invention is disposed on a flange, one side of the flange, a base including a first side and a second side, a first light emitting unit disposed on the first side, and a second side. A second light emitting part is disposed, the first side surface and the second side surface meet at a corner, form a first angle with each other, and a first distance from the flange to the first light emitting part measures the second light emitting part from the flange. is less than the second distance to the part.

The first light emitting unit may include a 1-1 light emitting element and a 1-2 light emitting element, and the second light emitting unit may include a 2-1 light emitting element and a 2-2 light emitting element.

The 1-1 light emitting element and the 1-2 light emitting element may be arranged in a line along the length direction of the base.

The third distance from the midpoint of the 1-1 light emitting element and the 1-2 light emitting element to the flange is the fourth distance from the midpoint of the 2-1 light emitting element and the 2-2 light emitting element to the flange. can be shorter

The separation distance between the 1-1 light emitting device and the 1-2 light emitting device may have a range of 0.02 to 1.15 times the width of the 1-1 light emitting device.

The first angle range may be formed from 55° to 90°.

The first light emitting part may be disposed closer to the corner than the opposite side of the corner on the first side surface, and the second light emitting part may be disposed closer to the corner than the opposite side of the corner on the second side surface.

The base may further include a support portion extending outwardly from at least one of the first side surface and the second side surface.

It further includes a block disposed on one end of the base and a protrusion extending from the block to the other side and spaced apart from the base, wherein the protrusion may cover at least a portion of the second light emitting unit.

A thickness of the protrusion in a thickness direction of the second light emitting part may be greater than or equal to a height from the second side surface to an upper end of the second light emitting part.

The fourth distance may have a range of 1.1 to 2 times the third distance.

A headlamp according to an embodiment of the present invention includes a housing having a reflective surface, a flange coupled to the housing, a base disposed on one side of the flange and including a first side surface and a second side surface, and a base disposed on the first side surface. It includes a lamp module including a first light emitting part and a second light emitting part disposed on the second side surface, the first side surface and the second side surface meet at a corner, mutually form a first angle, and the flange A first distance from the first light emitting part is shorter than a second distance from the flange to the second light emitting part.

The corner, the first light emitting part, and the second light emitting part may be disposed in an optical axis area.

According to the embodiment, the level of light distribution may be improved by changing the light emitting angle of the light emitting device.

In addition, by changing the shape of the base on which the light emitting element is disposed, heat dissipation characteristics may be improved.

In addition, a cutoff line may be satisfied by blocking a part of the light emitting region of the low beam.

Various advantageous advantages and effects of the present invention are not limited to the above description, and will be more easily understood in the process of describing specific embodiments of the present invention.

1 is a perspective view of a headlamp to which a lamp module according to an embodiment of the present invention is applied;
2 is a perspective view of the housing of FIG. 1;
3 is a perspective view of a lamp module according to an embodiment of the present invention;
4 is an exploded perspective view of a lamp module according to an embodiment of the present invention;
5 is an enlarged view of 5 regions of FIG. 4;
6a, 6b, 7a and 7b are cross-sectional views taken along line AA' of FIG. 5;
8 is an enlarged view of 8 regions of FIG. 4;
9 is a BB′ line cross-sectional view of FIG. 8;
10 is a cross-sectional view showing a light emitting device of a lamp module according to an embodiment of the present invention;
11A is a graph showing a change in brightness according to a change in the separation distance of adjacent light emitting devices in a lamp module according to an embodiment of the present invention;
11b and 11c are images showing the brightness according to the separation distance of adjacent light emitting devices in a lamp module according to an embodiment of the present invention,
Figure 12a is a graph showing the change in brightness according to the change in the height of the adjacent light emitting element in the lamp module according to an embodiment of the present invention,
Figure 12b is an image showing the brightness according to the height of the adjacent light emitting elements in the lamp module according to an embodiment of the present invention.
13 is an image showing a light distribution pattern and luminance measured as a first light emitting part is positioned closer to a second light emitting part from a flange in a lamp module according to an embodiment of the present invention.
14A and 14B are images showing maximum intensity values according to a position change of a first light emitting part and a second light emitting part from a flange in a lamp module according to an embodiment of the present invention.

The present embodiments may be modified in other forms or combined with each other, and the scope of the present invention is not limited to each of the embodiments described below.

Even if a matter described in a specific embodiment is not described in another embodiment, it may be understood as a description related to another embodiment, unless there is a description contrary to or contradictory to the matter in the other embodiment.

For example, if a feature of component A is described in a specific embodiment and a feature of component B is described in another embodiment, the opposite or contradictory description even if the embodiment in which components A and B are combined is not explicitly described. Unless there is, it should be understood as belonging to the scope of the present invention.

In the description of the embodiment, in the case where an element is described as being formed “on or under” another element, on or under (on or under) or under) includes both elements formed by directly contacting each other or by indirectly placing one or more other elements between the two elements. In addition, when expressed as "on or under", it may include the meaning of not only the upward direction but also the downward direction based on one element.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention.

1 is a perspective view of a headlamp to which a lamp module according to an embodiment of the present invention is applied, and FIG. 2 is a perspective view of the housing of FIG. 1 .

First, referring to FIGS. 1 and 2 , a headlamp 1 to which a lamp module according to an embodiment of the present invention is applied includes a housing 10 and a lamp module 100 .

One end of the lamp module 100 is inserted into and fixed to the hole 12 of the housing 10, and the light emitted from the light source of the lamp module 100 and dispersed is a reflective surface 10a disposed on the front surface of the reflector 11. ) and condensed in front of the vehicle.

At this time, a plurality of grooves 13 formed to a predetermined depth for coupling are formed at the edge of the hole 12 of the housing 10, and a flange of the lamp module 100, which will be described later, can be coupled.

That is, the groove 13 formed in the housing 10 and the flange of the lamp module 100 are coupled so that the lamp module 100 is detachably coupled to the housing 10 .

Figure 3 is a perspective view of a lamp module according to an embodiment of the present invention, Figure 4 is an exploded perspective view of the lamp module according to an embodiment of the present invention, Figure 5 is an enlarged view of a 5 region of Figure 4, Figure 6a, 6b, 7a, and 7b are cross-sectional views taken along line A-A' of FIG. 5, FIG. 8 is an enlarged view of area 8 of FIG. 4, and FIG. 9 is a cross-sectional view taken along line BB' of FIG. 11a is a cross-sectional view showing a light emitting element of a lamp module according to an embodiment of the present invention, and FIG. 11a is a graph showing a change in brightness according to a change in separation distance of adjacent light emitting elements in a lamp module according to an embodiment of the present invention. 11b and 11c are images showing the brightness according to the separation distance of adjacent light emitting devices in a lamp module according to an embodiment of the present invention, and FIG. 12a is an image of neighboring light emitting devices in a lamp module according to an embodiment of the present invention. 12B is a graph showing a change in brightness according to a change in height, and FIG. 12B is an image showing brightness according to the height of adjacent light emitting elements in a lamp module according to an embodiment of the present invention.

3 to 9 , a lamp module 100 according to an embodiment of the present invention includes a body 110, a first light source 120, a second light source 130, and a radiator 140.

The body 110 includes a block 111, a protrusion 112, a base 113, a support 114 and a flange 115.

The block 111 is formed perpendicular to the base 113 at one end of the body 110, and the light from the first light source 120 and the second light source 130 disposed on the base 113 is directed toward the front of the vehicle. Block direct reflection.

The block 111 may be integrally formed with the base 113, and is preferably made of a metal material having excellent thermal conductivity and impermeability.

In particular, referring to FIG. 8 together, the protrusion 112 extends from the block 111 to the other side to have a predetermined length, and the light emitting elements 132 and 133 of the second light source 130 disposed on the base 113 ) has a first thickness T1 so as to cover at least a part or all of the 2-1st light emitting element 132.

Here, the other end of the protrusion 112 is formed beyond the other end of the 2-1 light emitting element 132 to completely cover the 2-1 light emitting element 132 .

In addition, the protrusion 112 may be spaced apart from the 2-1 light emitting element 132 by 0.1 mm to 0.5 mm to satisfy the cutoff line required by the headlamp.

The protrusion 112 may be integrally formed with the base 113 like the block 111, and is preferably made of a metal material having excellent thermal conductivity and impermeability.

The first thickness T1 of the protrusion 112 is formed to be equal to or greater than the height H1 of the second light source 130, and blocks a portion of the light emitted from the light emitting element of the second light source 130 in one area. While being reflected to the outside of the vehicle through the reflective surface 10a of the housing 10, it can satisfy cutoff lines required by headlamps.

On the other hand, in the case of a low beam of a headlamp, light distribution regulations established in order not to obstruct the driver's field of vision of a vehicle operating on the opposite side of the vehicle must be satisfied.

In addition, the protrusion 112 is disposed at a predetermined distance from the light emitting element of the second light source 130, and the distance can be modified in various ways to satisfy the light distribution regulations of the low beam, but is not limited thereto in the present invention. .

However, the light emitted from the light emitting element of the second light source 130 has an increased light blocking effect as the separation distance from the protrusion 112 decreases. Conversely, if the distance between the protrusion 112 and the light emitting element of the second light source 130 increases too much, the size of the entire lamp module 100 increases, and is preferably set within a predetermined range.

The base 113 is formed to extend from the block 111 to the other side, and may be formed in a fan-shaped column shape or a triangular column shape composed of a first side surface 113a, a second side surface 113b, and an outer surface.

Meanwhile, the base 113 has excellent thermal conductivity and is composed of an impermeable metal material, so that heat generated from the first light source 120 and the second light source 130 can be easily discharged to the outside.

Here, the first side surface 113a and the second side surface 113b are formed to form a mutually first angle θ1, and a corner E is formed at a point where the first side surface 113a and the second side surface 113b meet. form That is, as the light source is changed to LED, the center of light is changed differently from the existing light bulb, so that the first side surface 113a and the second side surface 113b are formed to align the center of the LED with the center of light as much as possible by giving an angle. A base 113 having a mutual first angle θ1 is formed.

In particular, as shown in FIGS. 6 and 7 , the first angle θ1 may be set to approximately 55° to 90°, and accordingly, the first light source 120 and the second light source 130 emit light. The angle of emission of light can be controlled, so the level of light distribution can be properly controlled according to requirements.

Here, when the first angle θ1 formed by the first side surface 113a and the second side surface 113b of the base 113 is 55 ° or less, there is a problem in that the cut-off line of the low beam is not formed, and the first angle ( When θ1-1) is 90 ° or more, there is a problem that the low beam cut-off line and the high beam are out of focus, so that the first angle (θ1, θ1-1) is set in the range of 55 ° to 90 °, so that the low beam cut-off line It can cause the effect of securing the field of vision by preventing the driver of the oncoming vehicle from glare through securing and securing the light distribution of the high beam.

On the other hand, the central axis CP at which the virtual center lines C1 and C2 formed on one surface of the flange 115 intersect in the other direction can be defined as the optical axis of the lamp module 100 and the headlamp 1, The edge E of the base 113 may be formed very close to the central axis CP. Of course, the edge E of the base 113 may be formed identically to the central axis CP.

At this time, the first light emitting parts 122 and 123 of the first light source 120 and the second light emitting parts 132 and 133 of the second light source 130 are disposed on the first side surface 113a and the second light emitting part 113 of the base 113. Since it is disposed very close to the corner E on the side surface 113b, the first light emitting parts 122 and 123 and the second light emitting light are emitted within the optical axis area A formed with the optical axis CP of the lamp module 100 as the origin. Light from the units 132 and 133 may be irradiated to the outside.

In addition, the first side surface 113a of the base 113 at the imaginary 1-1 centerline C1-1 that is parallel to the imaginary first centerline C1 and passes through the corner E, the first side surface 113a of the base 113 has a second angle θ2 , and the second side surface 113b of the base 113 at the center line C1-1 may form a third angle θ3.

Here, as described above, when the first angle θ1 formed by the first side surface 113a and the second side surface 113b of the base 113 is increased to the 1-1 angle θ1-1, The third angle θ3 may be fixed without change, and the second angle θ2 may decrease correspondingly. Accordingly, it is possible to efficiently control the emission angle of light emitted from the first light emitting units 122 and 123 .

In addition, the outer surface of the base 113 is composed of a surface opposite to the corner E, and connects the first side surface 113a and the second side surface 113b. The outer surface of the base 113 may form the same surface as a part of the outer circumferential surface of the block 111 without a step.

In addition, the base 113 may further include a support part 114 extending along an outer surface of any one of the first side surface 113a or the second side surface 113b.

As a result, the volume of the base 113 can be expanded, reliability of structural rigidity can be secured, and heat dissipation efficiency can be increased.

The flange 115 is formed perpendicularly to the base 113 on the other side of the base 113, and may be disposed so that the blocks 111 face each other.

The flange 115 may be integrally formed with the other side of the base 113 or may be manufactured as a separate structure and connected to the base 113 .

The flange 115 includes a plurality of protrusions formed by protruding outward along an outer circumferential surface or an outer surface thereof.

The plurality of protrusions may be fastened to the above-described groove 13 of the housing 10 to form a fastening structure between the lamp module 100 and the housing 10, and the lamp module 100 to the housing 10 When combined, the position of the lamp module 100 can be fixed.

The first light source 120 is disposed on the first side surface 113a of the base 113 and includes a first substrate 121 and first light emitting parts 122 and 123 . The first light source 120 may operate as a high beam in the lamp module 100 .

The first substrate 121 may be formed of a plate-shaped PCB having a predetermined width D3, and is preferably formed of a metal PCB in terms of heat dissipation.

A plurality of circuit patterns (not shown) forming circuits are formed outside and inside the first substrate 121, and wires (not shown) for receiving power are connected.

The lower surface of the first substrate 121 is seated on the first side surface 113a of the base 113 and is in surface contact with each other, and the upper surface and lower surface of the first substrate 121 are parallel to each other so that the first side surface 113a The inclination formed and the inclination formed by the upper surface of the first substrate 121 are the same.

Here, the first light emitting units 122 and 123 are preferably disposed on the first substrate 121 perpendicularly to the slope formed by the first substrate 121 . Accordingly, the light emitting angles of the first light emitting units 122 and 123 may be controlled by controlling the inclination angle formed by the first side surface 113a of the base 113 .

The first light emitting units 122 and 123 may include at least two light emitting elements, and include a 1-1 light emitting element 122 and a 1-2 light emitting element 123 .

10 is a cross-sectional view showing a light emitting device of a lamp module according to an embodiment of the present invention.

Here, referring to FIG. 10 , each of the 1-1 light emitting device 122 and the 1-2 light emitting device 123 includes a first semiconductor layer 210, an active layer 220 and a second semiconductor layer 230. can include

The active layer 220 may be formed by being stacked on the first semiconductor layer 210 , and the second semiconductor layer 230 may be formed by being stacked on the active layer 220 .

The first semiconductor layer 210 may be an n-type semiconductor layer doped with an n-type dopant of a compound semiconductor such as group III-V or group II-VI.

The second semiconductor layer 230 is implemented as a compound semiconductor such as group III-V or group II-VI, and may be a p-type semiconductor layer doped with a p-type dopant.

The active layer 220 may include a superlattice layer structure in which InGaN layers 222 and GaN layers 224 are alternately stacked. Since the band gap energy of the InGaN layer 222 is lower than that of the GaN layer 224, the InGaN layer 222 may be a quantum well layer and the GaN layer 224 may be a quantum barrier layer.

Meanwhile, as shown in FIG. 10 , the active layer 220 may have a structure in which an InGaN layer 222 and a GaN layer 224 are alternately stacked twice, but is not limited thereto.

Each of the 1-1 light emitting element 122 and the 1-2 light emitting element 123 is a COB (Chip On Board) type and is mounted on the upper surface of the first substrate 121, and is mounted in the longitudinal direction of the base 113. (one side-the other side direction) are spaced apart from each other and arranged in a row.

At this time, the 1-1 light emitting element 122 is disposed closer to the flange 115 than the 1-2 light emitting element 123, and the 1-1 light emitting element 122 is connected to the flange 115 at a predetermined distance. It is spaced apart by the distance D1, and the midpoint of the 1-1 light emitting element 122 and the 1-2 light emitting element 123 is arranged to be spaced apart from the flange 115 by a predetermined distance D1-1. .

In addition, as described above, each of the 1-1 light emitting elements 122 and 1-2 light emitting elements 123 is a predetermined distance (D3) from the corner E side of the base 113 on the first substrate 121. -1), and may be spaced apart from the opposite side of the corner E on the first substrate 121 by a predetermined distance D3-2. Of course, since each of the 1-1 light emitting element 122 and the 1-2 light emitting element 123 is disposed adjacent to the corner E of the base 113, the distance D3-1 is the distance D3-1. 2) is smaller than that of

For example, the separation distance D3-1 is set to 2.3 mm, the separation distance D4-2 may be set to 9.0 mm, and the separation distance D3-2 is approximately equal to the separation distance D3-1. It can be set to 3 to 4 times.

Figure 11a is a graph showing the change in brightness according to the change in the separation distance of adjacent light emitting elements in the lamp module according to an embodiment of the present invention, Figures 11b and 11c are neighboring in the lamp module according to an embodiment of the present invention It is an image representing the brightness according to the distance between the light emitting elements.

Meanwhile, referring to FIGS. 9 and 11A to 11C , the 1-1 light emitting device 122 and the 1-2 light emitting device 123 are spaced apart from each other by a predetermined distance D5.

The separation distance D5 between the 1-1 light emitting device 122 and the 1-2 light emitting device 123 may be set in a range of about 0.1 mm to 4 mm. In addition, the separation distance D5 is preferably set in a range of approximately 0.1 mm to 0.7 mm. Here, since each of the 1-1 light emitting element 122 and the 1-2 light emitting element 123 is formed to have a width of approximately 3.5 mm, the 1-1 light emitting element 122 and the 1-2 light emitting element 123 The separation distance D5 of may be formed in a range of 0.02 to 1.15 times compared to the width of the 1-1 light emitting element 122 or the 1-2 light emitting element 123 .

As shown in FIGS. 11A to 11C , it can be confirmed that the luminous intensity of the light emitted from the first light emitting units 122 and 123 gradually decreases as the separation distance D5 increases, and when the separation distance D5 is 4 mm or more, the luminous intensity A problem arises with a rapid decrease in

Conversely, when the separation distance D5 is 0.1 mm or less, the 1-1 light emitting device 122 and the 1-2 light emitting device 123 are bonded on the first substrate 121 on which the circuit wiring is formed, but damage is caused in the manufacturing process. problems such as may occur, and a short circuit between the 1-1 light emitting element 122 and the 1-2 light emitting element 123 is easy to occur.

12A is a graph showing a change in brightness according to a change in height of adjacent light emitting elements in a lamp module according to an embodiment of the present invention, and FIG. 12B is a graph showing heights of adjacent light emitting elements in a lamp module according to an embodiment of the present invention It is an image representing the brightness according to .

Meanwhile, referring to FIGS. 9 and 12A to 12B , the first light source 120 composed of the first substrate 121 and the first light emitting parts 122 and 123 includes the first side surface 113a of the base 113. ) to a predetermined height H1.

The height H1 of the first light source 120 is preferably set in a range of approximately 1 mm (Ref) to 12 mm.

As shown in FIGS. 12A and 12B , as the height H1 of the first light source 120 increases, it can be confirmed that the luminous intensity of light emitted from the first light emitting units 122 and 123 gradually decreases, and the height H1 When is 12 mm or more, a problem in that the light intensity rapidly decreases occurs.

Conversely, when the height H1 of the first light source 120 is 1 mm or less, it is difficult to implement the first substrate 121 and the first light emitting parts 122 and 123 on which the circuit wiring is formed, deformed by heat or external shock, It is easy to cause breakage or a short circuit between the 1-1st light emitting element 122 and the 1-2nd light emitting element 123.

The second light source 120 is disposed on the second side surface 113b of the base 113 and includes a second substrate 131 and second light emitting parts 132 and 133 . The second light source 130 may operate as a low beam in the lamp module 100 .

The second substrate 131 may be formed of a plate-shaped PCB having a predetermined width D4, and is preferably formed of a metal PCB in terms of heat dissipation.

A plurality of circuit patterns (not shown) forming circuits are formed outside and inside the second substrate 131, and wires (not shown) for receiving power are connected.

The lower surface of the second substrate 131 is seated on the second side surface 113b of the base 113 and is in surface contact with each other, and the upper and lower surfaces of the second substrate 131 are parallel to each other so that the second side surface 113b is formed. The inclination formed and the inclination formed by the upper surface of the second substrate 131 are the same.

Here, the second light emitting units 132 and 133 are preferably disposed on the second substrate 131 perpendicularly to the inclination formed by the second substrate 131 . Accordingly, the light emitting angles of the second light emitting units 132 and 133 may be controlled by controlling the inclination angle formed by the second side surface 113b of the base 113 .

The second light emitting units 132 and 133 may include at least two light emitting elements, and include a 2-1 light emitting element 132 and a 2-2 light emitting element 133 .

Here, each of the 2-1 light emitting device 132 and the 2-2 light emitting device 133 may include a first semiconductor layer 210, an active layer 220 and a second semiconductor layer 230, Since the second light emitting units 132 and 133 may have the same structure as the first light emitting units 122 and 123, a detailed description of the structure of the second light emitting units 132 and 133 will be omitted below.

Each of the 2-1 light emitting element 132 and the 2-2 light emitting element 133 is a COB (Chip On Board) type and is mounted on the upper surface of the second substrate 131, and is mounted in the longitudinal direction of the base 113. (one side-the other side direction) are spaced apart from each other and arranged in a row.

At this time, the 2-1 light emitting element 132 is disposed closer to the flange 115 than the 2-2 light emitting element 133, and the 2-1 light emitting element 132 is connected to the flange 115 at a predetermined distance. It is spaced apart by the distance D2, and the midpoint of the 2-1 light emitting element 132 and the 2-2 light emitting element 133 is arranged to be spaced apart from the flange 115 by a predetermined distance D2-1. .

Here, the distance D1 between the 1-1 light emitting element 122 of the first light source 120 and the flange 115 is the distance D1 between the 2-1 light emitting element 132 of the second light source 120 and the flange ( 115) is formed smaller than the separation distance D2 between the 1-1 light emitting elements 122 and the 1-2 light emitting elements 123 from the midpoint to the flange 115 (D1-1 ) may be formed smaller than the separation distance D2-1 from the midpoint of the 2-1 light emitting element 132 and the 2-2 light emitting element 133 to the flange 115.

For example, the separation distance D2-1 from the midpoint of the 2-1st light emitting element 132 and the 2-2nd light emitting element 133 to the flange 115 is the 1-1st light emitting element 122 and the second 1-2 The separation distance D1-1 from the midpoint of the light emitting element 123 to the flange 115 may be set to 1.1 times to 2 times the comparison.

13 is an image showing a light distribution pattern and luminance measured as a first light emitting part is positioned closer to a second light emitting part from a flange in a lamp module according to an embodiment of the present invention.

14A and 14B are images showing maximum intensity values according to a position change of a first light emitting part and a second light emitting part from a flange in a lamp module according to an embodiment of the present invention.

Here, referring to FIGS. 13, 14a, 14b and the following [Table 1], as in one embodiment of the present invention, the first light emitting part located closer than the second light emitting part from the flange is taken as a reference (ref). As a result of moving the first light emitting part to one side or the other side by a predetermined distance, it is possible to suppress the occurrence of unnecessary light condensing that causes glare to the driver compared to the case where the first light emitting part and the second light emitting part are formed at the same position from the flange. This insufficient problem can be solved, and the problem of dark road surface can be solved by providing a sufficient amount of light to the lower part.

Here, the 1-1 light emitting element 122 and the 1-2 light emitting element 123 of the first light source 120 are connected to the 2-1 light emitting element 132 and the 2-2 light emitting element 132 of the second light source 130. By disposing more adjacent to the flange 115 than the light emitting element 133, it is possible to satisfy the standard and required light distribution of the headlamp 1 capable of realizing both high and low beams in one light source.

In addition, as described above, the 2-1st light emitting element 132 and the 2-2nd light emitting element 133 are each a predetermined distance (D4) from the corner E side of the base 113 on the second substrate 131. -1), and may be spaced apart from the opposite side of the corner E on the second substrate 131 by a predetermined distance D4-2. Of course, since each of the 2-1 light emitting element 132 and the 2-2 light emitting element 133 is disposed adjacent to the corner E of the base 113, the distance D4-1 is the distance D4-1. 2) is smaller than that of

For example, the separation distance D4-1 is set to 2.4 mm, the separation distance D4-2 may be set to 8.0 mm, and the separation distance D4-2 is approximately equal to the separation distance D4-1. It can be set to 3 to 4 times.

That is, the distance D4-1 of the second light emitting parts 132 and 133 from the edge E of the base 113 is 1.01 compared to the distance D3-1 of the first light emitting parts 122 and 123. It can be set to 1x to 1.1x.

In addition, although not clearly shown, the 2-1 light emitting element 132 and the 2-2 light emitting element 133 are separated by a distance between the 1-1 light emitting element 122 and the 1-2 light emitting element 123 ( H5), and the second light source 130 Since it may be formed at the same height H1 as the height H1 of the first light source 120, the separation distance H5 between the 2-1st light emitting element 132 and the 2-2nd light emitting element 133 will be described below. A detailed description of the height H1 of the second light source 130 will be omitted.

Meanwhile, as described above, a portion of the second light emitting units 132 and 133 is covered by the protrusion 112 extending from the block 111 to the other side, and a portion of the emitted light is blocked, thereby FIGS. 11B, 11C, and 12B. As shown in , a cutoff line satisfying light distribution laws is formed on the low beam side.

However, as shown in FIGS. 11B and 11C, when the separation distance H5 between the 2-1 light emitting element 132 and the 2-2 light emitting element 133 is increased to 4 mm or more, the second light emitting unit 132, The light emitted from 133) cannot satisfy the light distribution requirement of the headlamp 1 due to dispersion and irregular reflection.

The radiator 140 is disposed at the other end of the body 110 and may be coupled to the body 110 in a way such as an interference fit.

The heat sink 140 has excellent thermal conductivity and operates as a heat sink dissipating heat generated from the first light source 120 and the second light source 130, and has a maximum volume and volume within a limited structure. It is preferable that a plurality of protruding protrusions are formed to maintain the surface area, and since various structures can be used to increase heat dissipation efficiency, the shape of the heat dissipating body 140 is not limited in the present invention.

Although the above has been described with reference to the embodiments, this is only an example and does not limit the present invention, and those skilled in the art to which the present invention belongs will not deviate from the essential characteristics of the present embodiment. It will be appreciated that various variations and applications are possible. For example, each component specifically shown in the embodiment can be modified and implemented. And the differences related to these modifications and applications should be construed as being included in the scope of the present invention as defined in the appended claims.

1: head lamp 100: lamp module
110: body 120: first light source
130: second light source 140: radiator

Claims (13)

flange;
a base protruding to one side of the flange and including a first side and a second side;
a first light emitting part disposed on the first side surface;
a second light emitting unit disposed on the second side surface;
a block disposed on one end of the base; and
It extends from the block to the other side and includes a protrusion spaced apart from the base,
The first side and the second side form a first angle,
A first distance, which is the shortest distance from the flange to the first light emitting part, is shorter than a second distance, which is the shortest distance from the flange to the second light emitting part,
The first light emitting unit includes a 1-1 light emitting element and a 1-2 light emitting element,
The second light emitting unit includes a 2-1 light emitting element and a 2-2 light emitting element,
A third distance from the midpoint between the 1-1 light emitting element and the 1-2 light emitting element to the flange is a third distance from the midpoint between the 2-1 light emitting element and the 2-2 light emitting element to the flange. 4 is shorter than the distance,
The projection is formed to overlap with one of the 2-1 light emitting element or the 2-2 light emitting element,
The first light emitting part and the second light emitting part are disposed adjacent to corners where the first side surface and the second side surface meet,
The base connects the first side surface and the second side surface and includes an outer surface that is opposite to the corner,
The base includes a support portion extending along an outer surface from one of the first side surface and the second side surface,
The other end of the protrusion is formed to extend past the other end of one light emitting element so as to completely cover one of the 2-1st light emitting element or the 2-2nd light emitting element.
According to claim 1,
The 1-1 light emitting element and the 1-2 light emitting element are arranged in a line along the base protruding from the flange,
The 2-1 light emitting element and the 2-2 light emitting element are arranged in a line along the base protruding from the flange.
According to claim 2,
The distance between the 1-1 light emitting element and the 1-2 light emitting element ranges from 0.02 times to 1.15 times the width of the 1-1 light emitting element.
According to any one of claims 1 to 3,
The first angle range is 55 ° to 90 ° lamp module formed.
According to claim 4,
Including a corner where the first side and the second side meet,
The first light emitting part is disposed closer to the corner than the opposite side of the corner on the first side surface,
The second light emitting unit is disposed closer to the corner than the opposite side of the corner on the second side surface.
delete According to claim 1,
A lamp module, characterized in that the thickness of the protrusion in the thickness direction of the second light emitting portion is greater than or equal to a height from the second side surface to an upper end of the second light emitting portion.
According to claim 1,
The 2-1 light emitting element is disposed adjacent to the flange than the 2-2 light emitting element,
The projection is a lamp module covering the 2-2 light emitting element.
a housing having a reflective surface; and
A flange coupled to the housing, a base disposed on one side of the flange and including a first side surface, a second side surface, and an outer surface, a first light emitting unit disposed on the first side surface, and a second light emitting unit disposed on the second side surface. A lamp module including a light emitting unit, and a block disposed on one end of the base and a protrusion extending from the block to the other side and spaced apart from the base; including,
The first side surface and the second side surface meet at a corner and form a first angle with each other,
A first distance, which is the shortest distance from the flange to the first light emitting part, is shorter than a second distance, which is the shortest distance from the flange to the second light emitting part,
The protrusion is formed to overlap at least a portion of the second light emitting unit,
The first light emitting part and the second light emitting part are disposed adjacent to corners where the first side surface and the second side surface meet,
The base connects the first side surface and the second side surface and includes an outer surface that is opposite to the corner,
The base includes a support portion extending along an outer surface from one of the first side surface and the second side surface,
The other end of the projection is formed to extend past the other end of one light emitting element so as to entirely cover one of the 2-1st light emitting element or the 2-2nd light emitting element.
According to claim 9,
The corner, the first light emitting part and the second light emitting part are disposed in an optical axis area.
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